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
59
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、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
事实细节题。本题关键句为“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.”火车上只有一名工作人员。如果需要的话由他来驾驶火车,不过通常他只需启动火车,火车能自动运行和停止。故正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3482073.html
相关试题推荐
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]OnekindofvacationthatmanyAmericansenjoyiscamping.Ea
[originaltext]OnekindofvacationthatmanyAmericansenjoyiscamping.Ea
[originaltext]W:Didyouknowitwasgoingtoraintoday?M:Absolutelynot,th
[originaltext]W:Didyouknowitwasgoingtoraintoday?M:Absolutelynot,th
[originaltext]M:Excuseme,I’mlookingfortheemergencymom.Ithoughtitwas
[originaltext]M:Excuseme,I’mlookingfortheemergencymom.Ithoughtitwas
[originaltext]M:Excuseme,I’mlookingfortheemergencymom.Ithoughtitwas
随机试题
Onefeatureofnewfoundwealthinthedevelopingworldhasbeentheembrace
Wewerewarnedthatevenaslight________incalculationmightruinthewholep
下列哪项不是血瘀证的表现A.面色黧黑 B.头晕目眩 C.局部刺痛 D.唇甲
消风散组成中不包括的药物是A.甘草、羌活 B.防风、刑芥 C.生地、苍术
盐酸吗啡易氧化的部位是A:氧桥 B:双键 C:酚羟基 D:烯醇式羟基 E
以下对于细水雾灭火系统冲洗、试压的做法,不满足规范要求的是()。A.冲洗流速不
简述人类学习和动物学习的本质区别
甲、乙、丙、丁拟任A上市公司独立董事。根据《上市公司独立董事制度》的规定,下列选
自控仪表及控制系统调试中,回路联试要对系统误差进行检查,对最大误差值的要求为(
下列关于单价合同的说法,正确的有( )。A.固定单价合同条件适用于工期较短、工
最新回复
(
0
)