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
37
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、A platform worker.
B、A computer.
C、The command spot.
D、A machine.
答案
D
解析
事实细节题。本题关键句为“Here a machine checks and collects the tickets,and there are no workers on the platforms.”有一台机器用于检票、售票,月台上没有工作人员。故正确答案为D。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3482072.html
相关试题推荐
[originaltext]M:Goodeveningandwelcometo"Hardlife",theprogramthattalks
[originaltext]M:Goodeveningandwelcometo"Hardlife",theprogramthattalks
[originaltext]W:I’vejustbeenreadinganarticleonbiotherapy.M:Biotherapy
[originaltext]W:I’vejustbeenreadinganarticleonbiotherapy.M:Biotherapy
[originaltext]ThetwomostfamousfacesinBritaintodaybelongtotwowome
[originaltext]ThetwomostfamousfacesinBritaintodaybelongtotwowome
[originaltext]Moviesarethemostpopularformofentertainmentformillion
[originaltext]W:Isthelibraryopeneveryday?M:Exceptonweekends.Itisope
[originaltext]W:Isthelibraryopeneveryday?M:Exceptonweekends.Itisope
[originaltext]W:Isthelibraryopeneveryday?M:Exceptonweekends.Itisope
随机试题
Unlikethesummerhighincrimesofbodilyharm,burglaryhasadifferentcycle.
ThetransformationofjournalisminIndia—theworld’slargestdemocracyand
[originaltext]It’scommonknowledgethatmusiccanhaveapowerfuleffecto
[originaltext]Japanesestudentsworkveryhardbutmanyareunhappy.Theyfeel
Thenumberofdevicesyoucantalktoismultiplying—firstitwasyourphone,
A.条件(1)充分,但条件(2)不充分。 B.条件(2)充分,但条件(1)不充
下列化合物中不能进行缩聚反应的是()。A. B. C. D.
在选择核子密湿度仪测试位置时,应注意测试位置与距路面边缘或其他物体的最小距离不得
图示外伸梁,在C、D处作用相同的集中力F,截面A的剪力和截面C的弯矩分别是:
气质类型为多血质的个体的特点是()。 (A)直爽热情,但脾气暴躁,难以自我克
最新回复
(
0
)