[单选题]Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewageincreases.Onething,however,iscertain:yourchancesofgettingtheraiseyoufeelyoudeservearelessifyoudon’tatleastaskforit.Mentendtoaskformore,andtheygetmore,andthisholdstruewithotherresources,notjustpayincreases.ConsiderBeth’sstory:IdidnotgetwhatIwantedwhenIdidnotaskforit.Wehadcubicle(小隔间)officesandwindowoffices.Isatinthecubicleswithseveralmalecolleagues.Onebyonetheyweremovedintowindowoffices,whileIremainedinthecubicles,severalmaleswhowerehiredaftermealsowenttooffices.Oneinparticulartoldmehewasnextinlineforanofficeandthatithadbeenpartofhisnegotiationsforthejob.IguesstheythoughtmecontenttostayinthecubiclessinceIdidnotvoicemyopinioneitherway.Itwouldbeniceifweallreceivedautomaticpayincreasesequaltoourmerit,but“nice”isn’taqualityattributedtomostorganizations.Ifyoufeelyoudeserveasignificantraiseinpay,you’llprobablyhavetoaskforit.Performanceisyourbestbargainingchip(筹码)whenyouareseekingaraise.Youmustbeabletodemonstratethatyoudeservearaise.Timingisalsoagoodbargainingchip.Ifyoucangiveyourbosssomethingheorsheneeds(anewclientorasizablecontract,forexample)justbeforemeritpaydecisionsarebeingmade,youaremorelikelytogettheraiseyouwant.Useinformationasabargainingchiptoo.Findoutwhatyouareworthontheopenmarket.Whatwillsomeoneelsepayforyourservices?Gointothenegotiationspreparedtoplaceyourchipsonthetableattheappropriatetimeandpreparedtousecommunicationstyletoguidethedirectionoftheinteraction.7.WhatcanbeinferredfromBeth’sstory?
[单选题]Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewageincreases.Onething,however,iscertain:yourchancesofgettingtheraiseyoufeelyoudeservearelessifyoudon’tatleastaskforit.Mentendtoaskformore,andtheygetmore,andthisholdstruewithotherresources,notjustpayincreases.ConsiderBeth’sstory:IdidnotgetwhatIwantedwhenIdidnotaskforit.Wehadcubicle(小隔间)officesandwindowoffices.Isatinthecubicleswithseveralmalecolleagues.Onebyonetheyweremovedintowindowoffices,whileIremainedinthecubicles,severalmaleswhowerehiredaftermealsowenttooffices.Oneinparticulartoldmehewasnextinlineforanofficeandthatithadbeenpartofhisnegotiationsforthejob.IguesstheythoughtmecontenttostayinthecubiclessinceIdidnotvoicemyopinioneitherway.Itwouldbeniceifweallreceivedautomaticpayincreasesequaltoourmerit,but“nice”isn’taqualityattributedtomostorganizations.Ifyoufeelyoudeserveasignificantraiseinpay,you’llprobablyhavetoaskforit.Performanceisyourbestbargainingchip(筹码)whenyouareseekingaraise.Youmustbeabletodemonstratethatyoudeservearaise.Timingisalsoagoodbargainingchip.Ifyoucangiveyourbosssomethingheorsheneeds(anewclientorasizablecontract,forexample)justbeforemeritpaydecisionsarebeingmade,youaremorelikelytogettheraiseyouwant.Useinformationasabargainingchiptoo.Findoutwhatyouareworthontheopenmarket.Whatwillsomeoneelsepayforyourservices?Gointothenegotiationspreparedtoplaceyourchipsonthetableattheappropriatetimeandpreparedtousecommunicationstyletoguidethedirectionoftheinteraction.8.Wecanlearnfromthepassagethat________.
[单选题]Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewageincreases.Onething,however,iscertain:yourchancesofgettingtheraiseyoufeelyoudeservearelessifyoudon’tatleastaskforit.Mentendtoaskformore,andtheygetmore,andthisholdstruewithotherresources,notjustpayincreases.ConsiderBeth’sstory:IdidnotgetwhatIwantedwhenIdidnotaskforit.Wehadcubicle(小隔间)officesandwindowoffices.Isatinthecubicleswithseveralmalecolleagues.Onebyonetheyweremovedintowindowoffices,whileIremainedinthecubicles,severalmaleswhowerehiredaftermealsowenttooffices.Oneinparticulartoldmehewasnextinlineforanofficeandthatithadbeenpartofhisnegotiationsforthejob.IguesstheythoughtmecontenttostayinthecubiclessinceIdidnotvoicemyopinioneitherway.Itwouldbeniceifweallreceivedautomaticpayincreasesequaltoourmerit,but“nice”isn’taqualityattributedtomostorganizations.Ifyoufeelyoudeserveasignificantraiseinpay,you’llprobablyhavetoaskforit.Performanceisyourbestbargainingchip(筹码)whenyouareseekingaraise.Youmustbeabletodemonstratethatyoudeservearaise.Timingisalsoagoodbargainingchip.Ifyoucangiveyourbosssomethingheorsheneeds(anewclientorasizablecontract,forexample)justbeforemeritpaydecisionsarebeingmade,youaremorelikelytogettheraiseyouwant.Useinformationasabargainingchiptoo.Findoutwhatyouareworthontheopenmarket.Whatwillsomeoneelsepayforyourservices?Gointothenegotiationspreparedtoplaceyourchipsonthetableattheappropriatetimeandpreparedtousecommunicationstyletoguidethedirectionoftheinteraction.9.Togetapayraise,apersonshould________.
[单选题]Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewageincreases.Onething,however,iscertain:yourchancesofgettingtheraiseyoufeelyoudeservearelessifyoudon’tatleastaskforit.Mentendtoaskformore,andtheygetmore,andthisholdstruewithotherresources,notjustpayincreases.ConsiderBeth’sstory:IdidnotgetwhatIwantedwhenIdidnotaskforit.Wehadcubicle(小隔间)officesandwindowoffices.Isatinthecubicleswithseveralmalecolleagues.Onebyonetheyweremovedintowindowoffices,whileIremainedinthecubicles,severalmaleswhowerehiredaftermealsowenttooffices.Oneinparticulartoldmehewasnextinlineforanofficeandthatithadbeenpartofhisnegotiationsforthejob.IguesstheythoughtmecontenttostayinthecubiclessinceIdidnotvoicemyopinioneitherway.Itwouldbeniceifweallreceivedautomaticpayincreasesequaltoourmerit,but“nice”isn’taqualityattributedtomostorganizations.Ifyoufeelyoudeserveasignificantraiseinpay,you’llprobablyhavetoaskforit.Performanceisyourbestbargainingchip(筹码)whenyouareseekingaraise.Youmustbeabletodemonstratethatyoudeservearaise.Timingisalsoagoodbargainingchip.Ifyoucangiveyourbosssomethingheorsheneeds(anewclientorasizablecontract,forexample)justbeforemeritpaydecisionsarebeingmade,youaremorelikelytogettheraiseyouwant.Useinformationasabargainingchiptoo.Findoutwhatyouareworthontheopenmarket.Whatwillsomeoneelsepayforyourservices?Gointothenegotiationspreparedtoplaceyourchipsonthetableattheappropriatetimeandpreparedtousecommunicationstyletoguidethedirectionoftheinteraction.10.Tobesuccessfulinnegotiations,onemust________.
[单选题]Text3Forhundredsofyears,thecriminallaw(刑法)hasbeenbuiltaroundtheideathatwrongdoersmustbepunishedfortheircrimes.Themostbasicargumentforpunishmentisthatitpreserveslawandorderandrespectsforauthority.Fromthispointofview，punishmentdoestwothings.Itupholdsthelaw，anditpreventsothersfromthinkingtheycangetawaywithdoingthesamethingwithoutpunishment.Punishmentisbasedontheideathatmanypeoplehaveabarelycontrolleddesiretoactinforbiddenways.Oneofthebestwaystoreducecrimeistoreformorrehabilitate(改造)habitualcriminals.Themainproblemisnotthefirstoffenderorthepettythiefbuttherepeatedoffenderwhocommitsincreasinglyseriouscrimes.Accordingtocriminologists，crimewoulddecreasegreatlyifallsuchoffenderscouldbeturnedawayfromwrongdoing.ButU.S.prisonshavehadlittlesuccessinrehabilitatinginmates.Abouttwo-thirdsofthepeoplearrestedinanyyearhaveapreviouscriminalrecord.Rehabilitation(改造)ofcriminalscouldprobablybeimprovedgreatlyifexpertscouldprovidetherightkindofprogramfordifferenttypesofoffenders.Criminalsvarywidelyinthekindsofcrimestheycommit，theiremotionalproblems，andtheirsocialandeconomicbackgrounds.Notalloffenderscanbehelpedbythesametreatment.Manyrequiretheaidofphysicians,psychiatrists,orpsychologists.Othersrespondwelltoeducationalorvocationaltraining.Intheearly1990s,therewereabout1,300,000criminalsinU.S.city,county,state,andfederalcorrectionalinstitutions，andabout500,000morewereoutonparole.Societyspentmorethan$15billiontooperateprisonsandrelatedinstitutionsyearly,butonlyasmallpartofthissumwenttoprovidetreatment.Nearlyallthefundswereusedtofeedandclotheprisonersandtokeepthemundercontrol.Sincethe1ate1970s,however,therehasbeenatrendtowardpunishmentratherthanrehabilitationofoffenders.Prisonsentences(徒刑)arelonger.CapitalpunishmentshavebeenusedmorefrequentlysincetheU.S.SupremeCourtliftedadeathpenaltybanin1976.Nevertheless,crimepreventionshouldaimtopreventpeoplefrombecomingcriminalsinthefirstplace.Suchagoalprobablywouldbenefitfromreformprogramsinurbanslums.Theseprogramswouldincludeimprovedhousing,schools,andrecreationprogramsandincreasedjobopportunities.Therearemanyotherwaystoreducecrime.Peoplecanbeeducatedorpersuadedtotakegreaterprecautionsagainstcrime.Theycanbetaught,forexample,howtoprotecttheirhomesfromburglary.Automobiletheftswoulddropsharplyifdriversremovedtheirkeysandlockedtheircarswhenleavingthem.Betterlightinghelpsdiscouragepurse-snatchingsandotherrobberiesoncitystreetsandinparks.Manyexpertsbelievethatstrictgun-licensinglawswouldgreatlyreducecrime.11.Thebeliefthatpeopletendtobehaveinforbiddenways____.
[单选题]Forhundredsofyears,thecriminallaw(刑法)hasbeenbuiltaroundtheideathatwrongdoersmustbepunishedfortheircrimes.Themostbasicargumentforpunishmentisthatitpreserveslawandorderandrespectsforauthority.Fromthispointofview，punishmentdoestwothings.Itupholdsthelaw，anditpreventsothersfromthinkingtheycangetawaywithdoingthesamethingwithoutpunishment.Punishmentisbasedontheideathatmanypeoplehaveabarelycontrolleddesiretoactinforbiddenways.Oneofthebestwaystoreducecrimeistoreformorrehabilitate(改造)habitualcriminals.Themainproblemisnotthefirstoffenderorthepettythiefbuttherepeatedoffenderwhocommitsincreasinglyseriouscrimes.Accordingtocriminologists，crimewoulddecreasegreatlyifallsuchoffenderscouldbeturnedawayfromwrongdoing.ButU.S.prisonshavehadlittlesuccessinrehabilitatinginmates.Abouttwo-thirdsofthepeoplearrestedinanyyearhaveapreviouscriminalrecord.Rehabilitation(改造)ofcriminalscouldprobablybeimprovedgreatlyifexpertscouldprovidetherightkindofprogramfordifferenttypesofoffenders.Criminalsvarywidelyinthekindsofcrimestheycommit，theiremotionalproblems，andtheirsocialandeconomicbackgrounds.Notalloffenderscanbehelpedbythesametreatment.Manyrequiretheaidofphysicians,psychiatrists,orpsychologists.Othersrespondwelltoeducationalorvocationaltraining.Intheearly1990s,therewereabout1,300,000criminalsinU.S.city,county,state,andfederalcorrectionalinstitutions，andabout500,000morewereoutonparole.Societyspentmorethan$15billiontooperateprisonsandrelatedinstitutionsyearly,butonlyasmallpartofthissumwenttoprovidetreatment.Nearlyallthefundswereusedtofeedandclotheprisonersandtokeepthemundercontrol.Sincethe1ate1970s,however,therehasbeenatrendtowardpunishmentratherthanrehabilitationofoffenders.Prisonsentences(徒刑)arelonger.CapitalpunishmentshavebeenusedmorefrequentlysincetheU.S.SupremeCourtliftedadeathpenaltybanin1976.Nevertheless,crimepreventionshouldaimtopreventpeoplefrombecomingcriminalsinthefirstplace.Suchagoalprobablywouldbenefitfromreformprogramsinurbanslums.Theseprogramswouldincludeimprovedhousing,schools,andrecreationprogramsandincreasedjobopportunities.Therearemanyotherwaystoreducecrime.Peoplecanbeeducatedorpersuadedtotakegreaterprecautionsagainstcrime.Theycanbetaught,forexample,howtoprotecttheirhomesfromburglary.Automobiletheftswoulddropsharplyifdriversremovedtheirkeysandlockedtheircarswhenleavingthem.Betterlightinghelpsdiscouragepurse-snatchingsandotherrobberiesoncitystreetsandinparks.Manyexpertsbelievethatstrictgun-licensinglawswouldgreatlyreducecrime.12.Inthesecondparagraphtheauthorimplies____.
[单选题]Forhundredsofyears,thecriminallaw(刑法)hasbeenbuiltaroundtheideathatwrongdoersmustbepunishedfortheircrimes.Themostbasicargumentforpunishmentisthatitpreserveslawandorderandrespectsforauthority.Fromthispointofview，punishmentdoestwothings.Itupholdsthelaw，anditpreventsothersfromthinkingtheycangetawaywithdoingthesamethingwithoutpunishment.Punishmentisbasedontheideathatmanypeoplehaveabarelycontrolleddesiretoactinforbiddenways.Oneofthebestwaystoreducecrimeistoreformorrehabilitate(改造)habitualcriminals.Themainproblemisnotthefirstoffenderorthepettythiefbuttherepeatedoffenderwhocommitsincreasinglyseriouscrimes.Accordingtocriminologists，crimewoulddecreasegreatlyifallsuchoffenderscouldbeturnedawayfromwrongdoing.ButU.S.prisonshavehadlittlesuccessinrehabilitatinginmates.Abouttwo-thirdsofthepeoplearrestedinanyyearhaveapreviouscriminalrecord.Rehabilitation(改造)ofcriminalscouldprobablybeimprovedgreatlyifexpertscouldprovidetherightkindofprogramfordifferenttypesofoffenders.Criminalsvarywidelyinthekindsofcrimestheycommit，theiremotionalproblems，andtheirsocialandeconomicbackgrounds.Notalloffenderscanbehelpedbythesametreatment.Manyrequiretheaidofphysicians,psychiatrists,orpsychologists.Othersrespondwelltoeducationalorvocationaltraining.Intheearly1990s,therewereabout1,300,000criminalsinU.S.city,county,state,andfederalcorrectionalinstitutions，andabout500,000morewereoutonparole.Societyspentmorethan$15billiontooperateprisonsandrelatedinstitutionsyearly,butonlyasmallpartofthissumwenttoprovidetreatment.Nearlyallthefundswereusedtofeedandclotheprisonersandtokeepthemundercontrol.Sincethe1ate1970s,however,therehasbeenatrendtowardpunishmentratherthanrehabilitationofoffenders.Prisonsentences(徒刑)arelonger.CapitalpunishmentshavebeenusedmorefrequentlysincetheU.S.SupremeCourtliftedadeathpenaltybanin1976.Nevertheless,crimepreventionshouldaimtopreventpeoplefrombecomingcriminalsinthefirstplace.Suchagoalprobablywouldbenefitfromreformprogramsinurbanslums.Theseprogramswouldincludeimprovedhousing,schools,andrecreationprogramsandincreasedjobopportunities.Therearemanyotherwaystoreducecrime.Peoplecanbeeducatedorpersuadedtotakegreaterprecautionsagainstcrime.Theycanbetaught,forexample,howtoprotecttheirhomesfromburglary.Automobiletheftswoulddropsharplyifdriversremovedtheirkeysandlockedtheircarswhenleavingthem.Betterlightinghelpsdiscouragepurse-snatchingsandotherrobberiesoncitystreetsandinparks.Manyexpertsbelievethatstrictgun-licensinglawswouldgreatlyreducecrime.13.Theauthorspeculatesthatrehabilitationcanbemademoreeffectiveif____.
[单选题]Forhundredsofyears,thecriminallaw(刑法)hasbeenbuiltaroundtheideathatwrongdoersmustbepunishedfortheircrimes.Themostbasicargumentforpunishmentisthatitpreserveslawandorderandrespectsforauthority.Fromthispointofview，punishmentdoestwothings.Itupholdsthelaw，anditpreventsothersfromthinkingtheycangetawaywithdoingthesamethingwithoutpunishment.Punishmentisbasedontheideathatmanypeoplehaveabarelycontrolleddesiretoactinforbiddenways.Oneofthebestwaystoreducecrimeistoreformorrehabilitate(改造)habitualcriminals.Themainproblemisnotthefirstoffenderorthepettythiefbuttherepeatedoffenderwhocommitsincreasinglyseriouscrimes.Accordingtocriminologists，crimewoulddecreasegreatlyifallsuchoffenderscouldbeturnedawayfromwrongdoing.ButU.S.prisonshavehadlittlesuccessinrehabilitatinginmates.Abouttwo-thirdsofthepeoplearrestedinanyyearhaveapreviouscriminalrecord.Rehabilitation(改造)ofcriminalscouldprobablybeimprovedgreatlyifexpertscouldprovidetherightkindofprogramfordifferenttypesofoffenders.Criminalsvarywidelyinthekindsofcrimestheycommit，theiremotionalproblems，andtheirsocialandeconomicbackgrounds.Notalloffenderscanbehelpedbythesametreatment.Manyrequiretheaidofphysicians,psychiatrists,orpsychologists.Othersrespondwelltoeducationalorvocationaltraining.Intheearly1990s,therewereabout1,300,000criminalsinU.S.city,county,state,andfederalcorrectionalinstitutions，andabout500,000morewereoutonparole.Societyspentmorethan$15billiontooperateprisonsandrelatedinstitutionsyearly,butonlyasmallpartofthissumwenttoprovidetreatment.Nearlyallthefundswereusedtofeedandclotheprisonersandtokeepthemundercontrol.Sincethe1ate1970s,however,therehasbeenatrendtowardpunishmentratherthanrehabilitationofoffenders.Prisonsentences(徒刑)arelonger.CapitalpunishmentshavebeenusedmorefrequentlysincetheU.S.SupremeCourtliftedadeathpenaltybanin1976.Nevertheless,crimepreventionshouldaimtopreventpeoplefrombecomingcriminalsinthefirstplace.Suchagoalprobablywouldbenefitfromreformprogramsinurbanslums.Theseprogramswouldincludeimprovedhousing,schools,andrecreationprogramsandincreasedjobopportunities.Therearemanyotherwaystoreducecrime.Peoplecanbeeducatedorpersuadedtotakegreaterprecautionsagainstcrime.Theycanbetaught,forexample,howtoprotecttheirhomesfromburglary.Automobiletheftswoulddropsharplyifdriversremovedtheirkeysandlockedtheircarswhenleavingthem.Betterlightinghelpsdiscouragepurse-snatchingsandotherrobberiesoncitystreetsandinparks.Manyexpertsbelievethatstrictgun-licensinglawswouldgreatlyreducecrime.14.Accordingtotheauthor,punishmentisabettermeansthanrehabilitationinreducingcrimerate____.
[单选题]Forhundredsofyears,thecriminallaw(刑法)hasbeenbuiltaroundtheideathatwrongdoersmustbepunishedfortheircrimes.Themostbasicargumentforpunishmentisthatitpreserveslawandorderandrespectsforauthority.Fromthispointofview，punishmentdoestwothings.Itupholdsthelaw，anditpreventsothersfromthinkingtheycangetawaywithdoingthesamethingwithoutpunishment.Punishmentisbasedontheideathatmanypeoplehaveabarelycontrolleddesiretoactinforbiddenways.Oneofthebestwaystoreducecrimeistoreformorrehabilitate(改造)habitualcriminals.Themainproblemisnotthefirstoffenderorthepettythiefbuttherepeatedoffenderwhocommitsincreasinglyseriouscrimes.Accordingtocriminologists，crimewoulddecreasegreatlyifallsuchoffenderscouldbeturnedawayfromwrongdoing.ButU.S.prisonshavehadlittlesuccessinrehabilitatinginmates.Abouttwo-thirdsofthepeoplearrestedinanyyearhaveapreviouscriminalrecord.Rehabilitation(改造)ofcriminalscouldprobablybeimprovedgreatlyifexpertscouldprovidetherightkindofprogramfordifferenttypesofoffenders.Criminalsvarywidelyinthekindsofcrimestheycommit，theiremotionalproblems，andtheirsocialandeconomicbackgrounds.Notalloffenderscanbehelpedbythesametreatment.Manyrequiretheaidofphysicians,psychiatrists,orpsychologists.Othersrespondwelltoeducationalorvocationaltraining.Intheearly1990s,therewereabout1,300,000criminalsinU.S.city,county,state,andfederalcorrectionalinstitutions，andabout500,000morewereoutonparole.Societyspentmorethan$15billiontooperateprisonsandrelatedinstitutionsyearly,butonlyasmallpartofthissumwenttoprovidetreatment.Nearlyallthefundswereusedtofeedandclotheprisonersandtokeepthemundercontrol.Sincethe1ate1970s,however,therehasbeenatrendtowardpunishmentratherthanrehabilitationofoffenders.Prisonsentences(徒刑)arelonger.CapitalpunishmentshavebeenusedmorefrequentlysincetheU.S.SupremeCourtliftedadeathpenaltybanin1976.Nevertheless,crimepreventionshouldaimtopreventpeoplefrombecomingcriminalsinthefirstplace.Suchagoalprobablywouldbenefitfromreformprogramsinurbanslums.Theseprogramswouldincludeimprovedhousing,schools,andrecreationprogramsandincreasedjobopportunities.Therearemanyotherwaystoreducecrime.Peoplecanbeeducatedorpersuadedtotakegreaterprecautionsagainstcrime.Theycanbetaught,forexample,howtoprotecttheirhomesfromburglary.Automobiletheftswoulddropsharplyifdriversremovedtheirkeysandlockedtheircarswhenleavingthem.Betterlightinghelpsdiscouragepurse-snatchingsandotherrobberiesoncitystreetsandinparks.Manyexpertsbelievethatstrictgun-licensinglawswouldgreatlyreducecrime.15.Theauthorconcludesthepassagebypointingoutthat____.
[判断题]PartⅡDothefollowingstatementsagreewiththeinformationgiveninthereadingpassage?(每题2分，共计14分)Inboxes16-22onyourAnswerSheet,writeTRUEifthestatementagreeswiththeinformationFALSEifthestatementcontradictstheinformationNOTGIVENifthereisnoinformationonthisinthepassageText4:AirTrafficControlintheUSAAnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.16.TheFAAwascreatedasaresultoftheintroductionofthejetengine.
[判断题]AnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.17.AirTrafficControlstartedaftertheGrandCanyoncrashin1956.
[判断题]AnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.18.BeaconsandflashinglightsarestillusedbyATCtoday.
[判断题]AnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.19.SomeimprovementsweremadeinradiocommunicationduringWorldWarⅡ.
[判断题]AnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.20.ClassFairspaceisairspacewhichisbelow365mandnotnearairports.
[判断题]AnaccidentthatoccurredintheskiesovertheGrandCanyonin1956resultedintheestablishmentoftheFederalAviationAdministration(FAA)toregulateandoverseetheoperationofaircraftintheskiesovertheUnitedStates,whichwerebecomingquitecongested.TheresultingstructureofairtrafficcontrolhasgreatlyincreasedthesafetyofflightintheUnitedStates,andsimilarairtrafficcontrolproceduresarealsoinplaceovermuchoftherestoftheworld.Rudimentaryairtrafficcontrol(ATC)existedwellbeforetheGrandCanyondisaster.Asearlyasthe1920s,theearliestairtrafficcontrollersmanuallyguidedaircraftinthevicinityoftheairports,usinglightsandflags,whilebeaconsandflashinglightswereplacedalongcross-countryroutestoestablishtheearliestairways.However,thispurelyvisualsystemwasuselessinbadweather,and,bythe1930s,radiocommunicationwascomingintouseforATC.Thefirstregiontohavesomethingapproximatingtoday'sATCwasNewYorkCity,withothermajormetropolitanareasfollowingsoonafter.Inthe1940s,ATCcentrescouldanddidtakeadvantageofthenewlydevelopedradarandimprovedradiocommunicationbroughtaboutbytheSecondWorldWar,butthesystemremainedrudimentary.ItwasonlyafterthecreationoftheFAAthatfull-scaleregulationofAmerica'sairspacetookplace,andthiswasfortuitous,fortheadventofthejetenginesuddenlyresultedinalargenumberofveryfastplanes,reducingpilots'marginoferrorandpracticallydemandingsomesetofrulestokeepeveryonewellseparatedandoperatingsafelyintheair.ManypeoplethinkthatATCconsistsofarowofcontrollerssittinginfrontoftheirradarscreensatthenation'sairports,tellingarrivinganddepartingtrafficwhattodo.Thisisaveryincompletepartofthepicture.TheFAArealisedthattheairspaceovertheUnitedStateswouldatanytimehavemanydifferentkindsofplanes,flyingformanydifferentpurposes,inavarietyofweatherconditions,andthesamekindofstructurewasneededtoaccommodateallofthem.Tomeetthischallenge,thefollowingelementswereputintoeffect.First,ATCextendsovervirtuallytheentireUnitedStates.Ingeneral,from365mabovethegroundandhigher,theentirecountryisblanketedbycontrolledairspace.Incertainareas,mainlynearairports,controlledairspaceextendsdownto215mabovetheground,and,intheimmediatevicinityofanairport,allthewaydowntothesurface.ControlledairspaceisthatairspaceinwhichFAAregulationsapply.Elsewhere,inuncontrolledairspace,pilotsareboundbyfewerregulations.Inthisway,therecreationalpilotwhosimplywishestogoflyingforawhilewithoutalltherestrictionsimposedbytheFAAhasonlytostayinuncontrolledairspace,below365m,whilethepilotwhodoeswanttheprotectionaffordedbyATCcaneasilyenterthecontrolledairspace.TheFAAthenrecognisedtwotypesofoperatingenvironments.Ingoodmeteorologicalconditions,flyingwouldbepermittedunderVisualFlightRules(VFR,视觉飞行规则),whichsuggestsastrongrelianceonvisualcuestomaintainanacceptablelevelofsafety.PoorvisibilitynecessitatedasetofInstrumentalFlightRules(IFR,仪表飞行规则),underwhichthepilotreliedonaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.onaltitudeandnavigationalinformationprovidedbytheplane'sinstrumentpaneltoflysafely.Onaclearday,apilotincontrolledairspacecanchooseaVFRorIFRflightplan,andtheFAAregulationsweredevisedinawaywhichaccommodatesbothVFRandIFRoperationsinthesameairspace.However,apilotcanonlychoosetoflyIFRiftheypossessaninstrumentratingwhichisaboveandbeyondthebasicpilot'slicensethatmustalsobeheld.Controlledairspaceisdividedintoseveraldifferenttypes,designatedbylettersofthealphabet.UncontrolledairspaceisdesignatedClassF,whilecontrolledairspacebelow5,490mabovesealevelandnotinthevicinityofanairportisClassE.Allairspaceabove5,490misdesignatedClassA.ThereasonforthedivisionofClassEandClassAairspacestemsfromthetypeofplanesoperatinginthem.Generally,ClassEairspaceiswhereonefindsgeneralaviationaircraft(fewofwhichcanclimbabove5,490manyway),andcommercialturbopropaircraft.Above5,490mistherealmoftheheavyjets,sincejetenginesoperatemoreefficientlyathigheraltitudes.ThedifferencebetweenClassEandAairspaceisthatinClassA,alloperationsareIFR,andpilotsmustbeinstrument-rated,thatis,skilledandlicensedinaircraftinstrumentation.ThisisbecauseATCcontroloftheentirespaceisessential.Threeothertypesofairspace,ClassesD,CandB,governthevicinityofairports.Thesecorrespondroughlytosmallmunicipal,medium-sizedmetropolitanandmajormetropolitanairportsrespectively,andencompassanincreasinglyrigoroussetofregulations.Forexample,allaVFRpilothastodotoenterClassCairspaceisestablishtwo-wayradiocontactwithATC.NoexplicitpermissionfromATCtoenterisneeded,althoughthepilotmustcontinuetoobeyallregulationsgoverningVFRflight.ToenterClassBairspace,suchasonapproachtoamajormetropolitanairport,anexplicitATCclearance(飞机起降的许可)isrequired.Theprivatepilotwhocruiseswithoutpermissionintothisairspaceriskslosingtheirlicense.21.AllaircraftinClassEairspacemustuseIFR.
