首页
登录
职称英语
[originaltext] (32) The world’s first completely automatic railway has been
[originaltext] (32) The world’s first completely automatic railway has been
游客
2024-02-25
61
管理
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.
(32)The new Victoria Line was opened in 1969. This 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 from the Victoria Line. (33) Here a machine checks and collects the tickets, and there are no workers on the platforms.
(34)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 sports are the same distance apart. Each sends a certain signal. The train always moves at the speed that the command spots allow. (35)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. If one train stays 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、It will stop automatically.
B、It will move on at the same speed.
C、It will gradually slow down.
D、It will keep a safe distance from the other trains.
答案
A
解析
事实细节题。本题关键句为“If the command spot sends no signals,the train will stop.”如果指令点没有信号发出,火车会停下来。故正确答案为A。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3482074.html
相关试题推荐
[originaltext]AmyJohnsonwasaveryambitiousandenergeticperson.Shedi
[originaltext]AmyJohnsonwasaveryambitiousandenergeticperson.Shedi
[originaltext]Alongwithjoggingandswimming,cyclingisoneofthebesta
[originaltext]Buyingahouseisalwaysanexpensivebusiness.Itisnotjus
[originaltext]M:Phew!Ihadtorunallthewaytomakeit.W:Youarealittle
[originaltext]M:I’dliketomailthispackagetoMinneapolis.W:Howwouldyou
[originaltext]M:I’dliketomailthispackagetoMinneapolis.W:Howwouldyou
[originaltext]M:I’dliketomailthispackagetoMinneapolis.W:Howwouldyou
[originaltext]MostofushaveanimageofsuchanormalorstandardEnglish
[originaltext]MostofushaveanimageofsuchanormalorstandardEnglish
随机试题
Theconsumer______inrecentyearshasledtoanexplosionofshoppingcenterdev
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconse
Robertlookedasifhewereaboutto______whenhismotiveswerequestioned.A、fla
A.新生儿肺动脉高压 B.新生儿低体温 C.新生儿失眠甚至惊厥 D.新生儿
在乙酸、盐酸或氢氧化钠溶液中均易溶解的药物是A.诺氟沙星 B.红霉素 C.乙
马克思主义观点认为,培养全面发展人的唯一方法是()。 A.脑力劳动与体力劳动
在生产某零件的过程中,已知设计尺寸为5mm.生产过程中所允许的误差为(+0.00
该求助者产生心理问题的最主要原因是()。单选A.邻居要求赔偿 B.认为邻居不该
A.常规根管治疗 B.一次性根充 C.盖髓治疗 D.干髓术
(2020年真题)根据项目管理知识体系(PMBOK),为成功完成项目而确保项目应
最新回复
(
0
)