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.14.Whatistheresultoftheintroductionofnewtechnologiesinenergyindustries?

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.14.Whatistheresultoftheintroductionofnewtechnologiesinenergyindustries?

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A方案在三年中每年年初付款500元，乙方案在三年中每年年末付款500元，若利率10%，则两个方案第三年年末时的终值相差（）

等直杆受力如图，其橫截面面积A=100mm2，则横截面mk上的正应力有四种答案，正确

如图所示的结构，在铰A处挂一重物，已知W=15kN，各杆自重不计，则AB杆的受力大小为

羧酸的a-卤取代反应，由于其α-氢原子的活泼性较大，需先转化成酰氯或酸酐，后再用卤素、N-卤代酰胺等卤化剂进行卤化。

如何在新窗口中打开链接？A.<ahref=”#”target=”black”></a>B.<ahref=”#”target=”_blank”>C.<ahref=”#”target=”_self”></a>D.<ahref=”#”new>

选出你认为最合理的定义标题的方法A.<spanclass="heading">文章标题</span>B.<h3>文章标题</h3>C.<p><b>文章标题</b></p>D.<strong>文章标题</strong>

以下属性（）是指链接的目标文件在一个新窗口中打开。A._selfB._blankC._topD._parent

<imgalt="这是图片">，这个标记的作用是()。A.添加图片链接B.决定图片的排列方式C.在浏览器完全读入图片时,在图片位置显示的文字。D.在浏览器尚未完全读入图片时,在图片的上方显示“×”,并显示替代文本。

（单选题）在关系代数的专门关系运算中，从表中取出满足条件的属性的操作称为______；从表中选出满足某种条件的元组的操作称为_______；将两个关系中具有共同属性值的元组连接到一起构成新表的操作称为________。依次填入的是：A.选择、投影、连接B.投影、选择、连接C.投影、连接、选择、D.连接、投影、选择

5.以下关于SpringAOP的介绍错误的是。（）A:AOP的全称是Aspect-OrientedProgramming，即面向切面编程（也称面向方面编程）。B:AOP采取横向抽取机制，将分散在各个方法中的重复代码提取出来，这种采用横向抽取机制的方式，采用OOP思想是无法办到的。C:虽然AOP是一种新的编程思想，采取横向抽取机制，是OOP的升级替代品。D:目前最流行的AOP框架有两个，分别为SpringAOP和AspectJ。

下列有关AOP专业术语中，用于指那些被拦截到的点的是（）。A、JoinpointB、PointcutC、AspectD、Advice

以下属性（）是指链接的目标文件在一个新窗口中打开。A._selfB._blankC._topD._parent