首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、A platform worker. B、A computer. C、The command spot. D、A machine. DWho does all the checking and collecting tickets on the Vic
A、A platform worker. B、A computer. C、The command spot. D、A machine. DWho does all the checking and collecting tickets on the Vic
admin
2013-06-02
46
问题
The world’s first completely automatic railway has been built under the busy streets of London, The railway is called the Victoria Line, and it is part of the complete London underground railway.
The new Victoria Line was opened in 1969. This new line was very different from the others. The stations on the other lines need a lot of workers to sell tickets, and to check and to collect them when people leave the trains. This is all different on the Victoria Line. Here a machine checks and collects the tickets, and there are no workers on the platforms.
On the train, there is only one worker. If necessary, this man can drive the train. But usually he just starts it; it runs and stops by itself. The trains are controlled by electrical signals which are sent by the so- called "command spots".
The command spots are the same distance apart. Each sends a certain signal. The train always moves at the speed that the command spots allow. If the command spot sends no signals, the train will stop.
Most of the control work is done by computers. The computers also fix the train’s speeds, and send the signals to the command spots.
Other machines make sure that the trains are always a safe distance apart. One train may stay too long at a station; the other trains will then automatically move slower. So there is no danger of accidents on the line.
选项
A、A platform worker.
B、A computer.
C、The command spot.
D、A machine.
答案
D
解析
Who does all the checking and collecting tickets on the Victoria Line?
转载请注明原文地址:https://kaotiyun.com/show/Ce67777K
0
大学英语六级
相关试题推荐
A、Helosthismother.B、HewasunhappyinCalifornia.C、Hemissedhisaunt.D、Hehadtoattendschoolthere.A细节题。文章中男士提到Hewasn
AllpeoplewillinglycametoAmericawiththeintentionofachievingabetterlife.Therewere______groupsofindenturedserv
Directions:Forthispart,youareallowed30minutestowritealettertoapplyforaposition.Youshouldwriteatleast150w
A、Asickfriend.B、Amathclass.C、Schoolpolicy.D、Theman’stest.C一定要把握关键词,几个选项都有迷惑性,但是A,B和D只是在文中出现,只有C是正确答案,依据"privacyact"
Excusesrepresentadesiretohangontothelifeyouhavenow.Anexcuseisanobstaclethatyouchoosetoplace【C1】______front
A、Fourcontestantsfailedtowinprizes.B、Themanateduringtheshow.C、Thewomanmissedtheshow.D、Fivecontestantswoncars
A、Suegotpromoted.B、Johnhadtoquithisjob.C、BothJohnandSuegotaraise.D、Suefailedtocompleteherproject.A录音结尾提到,
ImprovingthebalancebetweentheworkingpartofthedayandtherestofitisagoalofagrowingnumberofworkersinrichWe
HowBirdsFindWayHome?Theabilityofbirdstoreturntoafamiliarplacefromanydistanceisaremarkablefeatofnature
HowBirdsFindWayHome?Theabilityofbirdstoreturntoafamiliarplacefromanydistanceisaremarkablefeatofnature
随机试题
基金公司募集基金前,须在公司网站上公告的文件不包括()。
电焊机技术标准规定,焊条电弧焊电源的额定负载持续率为()。
A.粉红色泡沫痰B.铁锈色痰C.砖红色黏稠胶冻状痰D.黄色黏稠脓痰克雷伯杆菌肺炎
全手正位片影像不能显示的是
A.子宫颈糜烂B.子宫颈息肉C.子宫颈肥大D.子宫颈腺体囊肿E.子宫颈管炎
(2014年)案情:国有化工厂车间主任甲与副厂长乙(均为国家工作人员)共谋,在车间的某贵重零件仍能使用时,利用职务之便,制造该零件报废、需向五金厂(非国有企业)购买的假象(该零件价格26万元),以便非法占有货款。甲将实情告知五金厂负责人丙,嘱丙接到订单后,
在价格总水平下降过程中,如果名义工资不下降,或下降幅度小于价格的下降度,则实际工资就会()。
项目组讨论研究,根据大家目前的进度,这个项目必然不能按期完成。这句话的意思是()。
Amongtheraftofbooks,articles,jokes,romanticcomedies,self-helpguidesandotherwritingsdiscussingmarriage,somefamil
ManyvisitorstotheUnitedStatesfindthatthefastpaceatwhichpeoplemoveisverytroubling.One’sfirstimpressionislik
最新回复
(
0
)