为你找到 1000 条关于 2.12 的结果
判断A(10,8,12),B(5,7,10),则点A实在点B的()。
2.下列关于“符号”说法错误的是()
2.下列关于传播类型说法正确的有()
生产工人小李的月标准工资2000元,12月份出勤20天,病假2天,事假1天,缺勤期间无法定节假日,本月共8个休息日,其病假工资按80%计发,则月薪制下,每月按30天计算,小李本月应得工资额为()元。
日工资率=月标准工资/30=2000/30=66.667 缺勤工资=1*66.667+2*66.667(1-80%)=93.33 应得工资=2000-93.33=1906.67
表达“从一个关系的所有行中提取出满足某些条件的行”,“从一个关系的所有列中提取出某些列”“提取出属于一个关系但不属于另一关系的所有元组”“将两个关系必须按照某种条件串接成一个较大的关系”的操作依次是()。1、并2、交3、积4、选择5、投影6、差7、连接
12.运用JSP技术进行开发可以将内容的生成和显示相分离。()
12.()动作用于嵌入现有的Bean(A)include(B)useBean(C)setProperty(D)getProperty
2.下列选项中,()可以准确地获取请求页面的一个文本框的输入(文本框的名称为name).(A)request.getParameter(name)(B)request.getParameter("name")(C)request.getParameterValues(name)(D)request.getParameterValues("name")
无屈服阶段的塑性材料,以卸载后产生数值为0.2%塑性应变(残余应变)的应力值称为名义屈服极限(屈服强度)
二只50mL容量瓶,分别为(1)、(2),在(1)号容量瓶中加入Cd2+未知液5.0mL,测得扩散电流为10μA,在(2)号容量瓶中加入Cd2+未知液5.0mL,再0.005mol/LCd2+标准溶液5.0mL,测得扩散电流为15μA,未知溶液中Cd2+的浓度是多少(mol/L)()
注意题目中的容量瓶,意思是将溶液要稀释至50mL然后再开始测定
12.「2時から会議だから、(    )行きましょうか。」   [そうですね。」
2.TheXiaDynasty,thefirstinChinesehistory,wasestablishedinthe21stcenturyBC,headingthebeginningofaslavesocietyinChina.
Althoughmanyofusmayfeelair-conditionersbringrelieffromhot,humidorpollutedoutsideair,theyposemanypotentialhealthhazards.Muchresearchhaslookedathowthemovementofairinsideaclosedenvironment---suchasanofficebuilding---canspreaddiseaseorexposepeopleinthebuildingtoharmfulchemicals.OneofthemorewidelypublicizeddangersisthatofLegionnaire’sdisease,whichwasfirstrecognizedinthe1970s.Thiswasfoundtohaveaffectedpeopleinbuildingswithair-conditioningsystemsinwhichwarmairpumpedoutofthesystem’coolingtowerswassomehowsuckedbackintotheairintake(通风口),inmostcasesduetopoordesign.Thewarmair,filledwithbacteria,wascombinedwithcooled,conditionedairandwasthencirculatedaroundvariouspartsofthebuilding.Studiesshowedthatevenpeopleoutsidesuchbuildingswereatriskiftheywalkedpastairexhaustpipes.Largeair-conditioningsystemsaddwatertotheairtheycirculatebymeansofhumidifiers(湿度调节器).Inoldersystems,thewaterusedforthisprocessiskeptinspecialreservoirs,thebottomsofwhichprovidebreedinggroundsforbacteriawhichcanfindtheirwayintotheventilation(通风)system.Therisktohumanhealthfromthissituationhasbeenhighlightedbythefactthattheimmunesystems(免疫系统)ofapproximatelyhalfofworkersinair-conditionedofficebuildingshavedevelopedtheabilitytofightofftheorganismsfoundatthebottomofsystemreservoirs.Butchemicalscalled“biocides”areaddedtoreservoirstomakethemgerm-free,andtheyaredangerousintheirownrightinsufficientquantities,astheyoftencontaincompoundsstronglylinkedtocancers.Finally,itshouldbepointedoutthattheartificialclimaticenvironmentcreatedbyair-conditionerscanalsoaffectus.Inanaturalenvironment,whetherindoororoutdoor,therearesmallvariationsintemperatureandhumidity.Indeed,thehumanbodyhaslongbeenaccustomedtothesenormalchanges.Inanair-conditionedlivingorworkingenvironment,however,bodytemperaturesremainwellunder37℃,ournormaltemperature.Thisleadstoaweakenedimmunesystemandthusgreaterexposuretodiseasessuchascoldsandflu.2.Intheoldair-conditionedsystems,bacteriafirstdevelop______.
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.12.Howwouldtheelderlyandthedisabledbenefitfromdriverlesscars?
2.The18thcenturyreallywasawaterbornecentury,the19thcenturyarailcentury,the20thcenturyahighway,car,truckcentury—andthe21stcenturywillincreasinglybeanaviationcentury,astheglobebecomesincreasinglyconnectedbyair,