首页
登录
职称英语
[originaltext] The world’s first completely automatic railway has been built
[originaltext] The world’s first completely automatic railway has been built
游客
2023-08-25
32
管理
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.
Questions 19 to 21 are based on the passage you have just heard.
19. What happened to the complete London underground railway in 1969?
20. Who does all the checking and collecting of tickets on the Victoria Line?
21. What is the task of the only worker on the Victoria Line train?
选项
A、A platform worker.
B、A computer.
C、The command spot.
D、A machine.
答案
D
解析
选项均为表人或物的名词词组表明,本题可能考查动作的施予者。短文中提到Here a machinechecks and collects the tickets(在这里机器进行所有的捡票和收票工作),由此可知,答案为D)。
转载请注明原文地址:https://tihaiku.com/zcyy/2957043.html
相关试题推荐
[originaltext]W:DidwehaveanyhomeworkassignedforFriday?Ididn’ttakean
[originaltext]AmericanvisitorstoEasternAsiaareoftensurprisedandpuz
[originaltext]AmericanvisitorstoEasternAsiaareoftensurprisedandpuz
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Thefamilyischanging.Inthepast,grandparents,parents,a
[originaltext]Thefamilyischanging.Inthepast,grandparents,parents,a
[originaltext]Thefamilyischanging.Inthepast,grandparents,parents,a
[originaltext]W:Hi,Jack,haveyoufinishedProfessorSmith’sassignment?M:T
[originaltext]W:Hi,Jack,haveyoufinishedProfessorSmith’sassignment?M:T
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
随机试题
Bidingmybicyclehomefromschool,____asIwentaroundthecorner.A、acarhit
[originaltext]W:Whatdoestheterm"alternativeenergysource"mean?M:Whenw
[originaltext][12]LawshavebeenwrittentogoverntheuseoftheAmerican
[originaltext](16)Itiswhatfaileddietershavelongsuspected:Fatpeopl
污水厂中预处理单元和二沉池的设计流量应按下列哪项确定?()A.平均日流量
下列关于锅炉的参数说法错误的是()。A.锅炉的蒸发量是指蒸汽锅炉每小时所产生
A. B. C. D.
行为科学研究显示,工作中的人际关系通常不那么复杂,也宽松些,可能是由于这种人际关
影响设备投资的因素,主要有( )。A.设备经济寿命期 B.设备对工程质量的保
治疗呼吸衰竭时,为建立通畅的气道应采取以下措施,除了A.给予祛痰药促进排痰 B
最新回复
(
0
)