甲国生产1单位小麦需15个劳动力，生产1单位大豆需25个劳动力；乙国生产1单位小麦需20个劳动力，生产1单位大豆需40个劳动力，根据比较优势理论（）。

已知三点A（0、40、15）、B（20、40、15）、C（0、35、0），其中位于投影轴上的点是哪个点？

已知点A坐标（0、40、15），则该点是处于什么空间位置？

年利润总额等于年产品销售收入减去（）。

40.ThefirstEnglishpermanentsettlementwasfoundedinCalifornia.

某企业的预计的资本结构中，资产负债率比率为40%，债务税前资本成本为12%。目前市场上的无风险报酬率为8%，市场上所有股票的平均收益率为16%，公司股票的β系数为1.2，所得税税率为25%，则加权平均资本成本为（　）%。　

15.<%@page%>指令不一定放在页面的头部。（）

15.在xml有如下代码段：<servle><servle-name>teacher</servlet-name><servlet-class>teacherCart</servlet-class></servlet>在Servlet中()把Servlet名：teacher取出来。()（A）使用Servlet的getServletName方法（B）使用ServletConfing的getServletName方法（C）使用ServleContext的getServletName方法（D）使用ServletRequest的getServletName方法

某企业某年度年末流动负债为50万元，年初存货为40万元，全年主营业务成本为80万元，年末流动比率为2.5，速动比率为1.3，则本年度存货周转次数为（）次。

15．「あの先生の名前をしっていますか。」　　「（　　　　　　）。」

Imagineyouenteracarwithnosteeringwheel,nobrakeoracceleratorpedals(踏板).Underavoice-activatedcommand,yousayanaddress“Thefastestroutewilltakeus15.3minutes.ShouldItakeit?”Yousay“yes”andyouareonyourway.Thecarrespondsandstartsmovingallbyitself.Allyouhavetodoissitbackandrelax.Howweirdwoulditbeif,onedayinthefuture,everyonehadsuchacar?Nocrazydiving,noinsults,nocuttingin;trafficlawswouldberespectedanddrivingmuchsafer.Ontheotherhand,imaginethecostsavingsforlocalpoliceenforcementandtownbudgetswithoutallthosespeedingandparkingtickets.Anewtechnologyhasthepotentialtochangemodernsocietyinradicalways.There’snoquestionthatself-drivingvehiclescouldbeanenormousbenefit.Thepotentialforsafercarsmeansaccidentstatisticswoulddrop:some94%ofroadaccidentsintheU.S.involvehumanerror.Olderdriversandvisually-orphysically-impairedpeoplewouldgainanewleveloffreedom.Maintainingsafespeedsandbeingelectric,self-drivingcarswoulddrasticallyreducepollutionlevelsanddependencyonnon-renewablefuels.Roadswouldbequieter,peoplesafer.Butwemustalsoconsidertheimpactofthenewtechnologyonthosewhonowdependondrivingfortheirlivelihoods.AccordingtotheU.S.DepartmentofLabor,inMay2015therewere505,560registeredschoolbusdrivers.TheAmericanTruckingAssociationlistsapproximately3.5millionprofessionaltruckdriversintheU.S.Thecompaniesdevelopingself-drivingvehiclesshouldbepartneringwithstateandfederalauthoritiestoofferretrainingforthismassiveworkforce,manyofwhomwillbedisplacedbythenewtechnology.Thisissimilartowhat’shappeninginthecoalandoilindustries,asituationthatfuelsmuchofthecurrentpoliticaldiscontentinthiscountry.Newtechnologieswill,andshould,bedeveloped.Thisishowsocietymovesforward.However,progresscan’tbeone-sided.Itisnecessaryforthecompaniesandstateagenciesinvolvedtoconsidertheethicalconsequencesofthesepotentialchangestobuildabetterfutureforall.15.Whatdoestheauthorsuggestbusinessesandthegovernmentdo?

Imagineyouenteracarwithnosteeringwheel,nobrakeoracceleratorpedals(踏板).Underavoice-activatedcommand,yousayanaddress“Thefastestroutewilltakeus15.3minutes.ShouldItakeit?”Yousay“yes”andyouareonyourway.Thecarrespondsandstartsmovingallbyitself.Allyouhavetodoissitbackandrelax.Howweirdwoulditbeif,onedayinthefuture,everyonehadsuchacar?Nocrazydiving,noinsults,nocuttingin;trafficlawswouldberespectedanddrivingmuchsafer.Ontheotherhand,imaginethecostsavingsforlocalpoliceenforcementandtownbudgetswithoutallthosespeedingandparkingtickets.Anewtechnologyhasthepotentialtochangemodernsocietyinradicalways.There’snoquestionthatself-drivingvehiclescouldbeanenormousbenefit.Thepotentialforsafercarsmeansaccidentstatisticswoulddrop:some94%ofroadaccidentsintheU.S.involvehumanerror.Olderdriversandvisually-orphysically-impairedpeoplewouldgainanewleveloffreedom.Maintainingsafespeedsandbeingelectric,self-drivingcarswoulddrasticallyreducepollutionlevelsanddependencyonnon-renewablefuels.Roadswouldbequieter,peoplesafer.Butwemustalsoconsidertheimpactofthenewtechnologyonthosewhonowdependondrivingfortheirlivelihoods.AccordingtotheU.S.DepartmentofLabor,inMay2015therewere505,560registeredschoolbusdrivers.TheAmericanTruckingAssociationlistsapproximately3.5millionprofessionaltruckdriversintheU.S.Thecompaniesdevelopingself-drivingvehiclesshouldbepartneringwithstateandfederalauthoritiestoofferretrainingforthismassiveworkforce,manyofwhomwillbedisplacedbythenewtechnology.Thisissimilartowhat’shappeninginthecoalandoilindustries,asituationthatfuelsmuchofthecurrentpoliticaldiscontentinthiscountry.Newtechnologieswill,andshould,bedeveloped.Thisishowsocietymovesforward.However,progresscan’tbeone-sided.Itisnecessaryforthecompaniesandstateagenciesinvolvedtoconsidertheethicalconsequencesofthesepotentialchangestobuildabetterfutureforall.15.Whatdoestheauthorsuggestbusinessesandthegovernmentdo?

Theproblemwithaparentalopen-walletpolicy,saysGodfrey:“ifyou’realwaysgivenmoney,whywouldithaveanyvaluetoyou?”Earnedmoneyisspentmorewisely,shesays.“You’reteachingthemthatthereisnotanentitlementprograminlife.Thewayyougetitisyouearnit.”Godfreythinksanallowanceshouldbechore-based,andshedividesworkintotwocategories:citizen-of-the-householdchoresandwork-for-paychores.“Thepunishmentfornotdoingyourwork-for-paychoresisyoudon’tgetpaid.”Otherexperts,includingJaynePearl,authorofKidsandMoney,believethateveryfamilymemberisentitledtoasmallpieceofthefinancialpieandthatitshouldn’tbetiedtowork.Doingso“complicatesthingsunnecessarilyandimbuesallowancewithpowerstrugglesandcontrolissues,”saysPearl.“Ithinkof(anallowance)aslearningcapital....Theyhavetohavesomemoneytopracticewith.”40.WhichofthefollowingwouldGodfreyprobablyagree?___________

Theproblemwithaparentalopen-walletpolicy,saysGodfrey:“ifyou’realwaysgivenmoney,whywouldithaveanyvaluetoyou?”Earnedmoneyisspentmorewisely,shesays.“You’reteachingthemthatthereisnotanentitlementprograminlife.Thewayyougetitisyouearnit.”Godfreythinksanallowanceshouldbechore-based,andshedividesworkintotwocategories:citizen-of-the-householdchoresandwork-for-paychores.“Thepunishmentfornotdoingyourwork-for-paychoresisyoudon’tgetpaid.”Otherexperts,includingJaynePearl,authorofKidsandMoney,believethateveryfamilymemberisentitledtoasmallpieceofthefinancialpieandthatitshouldn’tbetiedtowork.Doingso“complicatesthingsunnecessarilyandimbuesallowancewithpowerstrugglesandcontrolissues,”saysPearl.“Ithinkof(anallowance)aslearningcapital....Theyhavetohavesomemoneytopracticewith.”40.WhichofthefollowingwouldGodfreyprobablyagree?___________

建立数据库表时，将年龄字段值限制在12～40岁之间的这种约束属于实体完整性约束