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、To drive the train after it is started automatically. B、To start the train and to drive it when necessary. C、To take care of t
A、To drive the train after it is started automatically. B、To start the train and to drive it when necessary. C、To take care of t
admin
2013-04-15
37
问题
(32) 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.
Tile stations on the other lines need a lot of workers to sell tickets, and to cheek and to collect them when people leave the trains. This is all different on the Victoria Line. (33)Here a machine checks and collects the tickets, and there are no workers on tile platforms. ()n the train, there is only one worker. (34)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. (35)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、To drive the train after it is started automatically.
B、To start the train and to drive it when necessary.
C、To take care of the passengers on the train.
D、To send commanding signals to the command spot.
答案
B
解析
细节推断题。文章中间部分提到,每列火车上只有一位工作人员,通常只负责让火车启动,虽然他可以操纵火车,但一般情况下,火车都是自动运行的。B)“让火车启动并在需要时进行驾驶”与原文意思相符。
转载请注明原文地址:https://jikaoti.com/ti/1YkFFFFM
0
大学英语六级
相关试题推荐
Asoneoftheyoungestprofessorsintheuniversity,MissKingiscertainlyonthe_______ofabrilliantcareer.
Overthepastdecade,manycompanieshadperfectedtheartofcreatingautomaticbehaviors—habits—amongconsumers.Thesehab
Overthepastdecade,manycompanieshadperfectedtheartofcreatingautomaticbehaviors—habits—amongconsumers.Thesehab
A、Workersontheplatformsandtrainswerereplacedbymachines.B、Acompletelyautomaticlinewasaddedtoitsnetwork.C、Itbe
Talkingofcampaignsbyourcharitytophaseoutthekeepingofanimalsincaptivity,DartmoorZooownerBenMeesays,"Actually
DrugshavebeenapartoftheAmericanstorysincetheveryfirstdayColumbuslandedintheNewWorld.TheTainoIndians【B1】___
A、Thedegreetheydisruptthecomputer.B、Thewaytheyreproduceandspread.C、ThespacetheyoccupyontheInternet.D、Thetarg
A、Hedoesn’tknowwhenherclassesstarted.B、Hedoubtsshemakesmuchmoneynow.C、He’ssurprisedshechosethatagency.D、Hew
A、BecausemanyarchitectsstudiedwithWright.B、BecauseWrightstartedthepracticeof"land-scraping".C、BecauseWrightusede
随机试题
典型的谈判议程主要包括哪些内容?
A.天南星科植物B.鸢尾科植物C.兰科植物D.姜科植物E.菊科植物石菖蒲药材来源于
女患者,妊娠7个月,出现胸腹胀满,甚则喘急,烦躁不安。应为
男性,60岁,有肺气肿史,发热、咳嗽1周,痰量多而黏稠,胸片示右上肺大片状阴影,内有多个空腔,水平裂呈向下弧形。最可能的诊断是
规划的基本性质是()。
对重要的程序或数据要经常作备份,以便感染上病毒后能够得到恢复。()
课税对象的数额超过免征额的,只就减除免征额后的剩余部分计征税款。()
外国公司与本国公司的区别,主要在于公司的()不同。
美国行为主义心理学家华生在《行为主义》一书中写道:“给我一打健康的婴儿,一个由我支配的特殊的环境,让我在这个环境里养育他们,我可担保,任意选择一个,不论他父母的才干、倾向、爱好如何,他父母的职业及种族如何,我都可以按照我的意愿把他们训练成为任何一种人物——
IsYourChild’sStomachPainAllinHisHead?Weallknowtherearetimesthatkidsseemtocomplain【C1】______astomachache
最新回复
(
0
)