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
51
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:http://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
如何做好出版物的售中服务?
急性肾损伤进行透析治疗的目的包括()A.纠正高钾血症 B.清除体内过多的水
QDII可以投资于下面()金融产品或工具 ①银行存款 ②政府债券 ③远期
青紫型先天性心脏病预防脑血栓形成的措施为A.预防患儿感冒 B.预防患儿缺氧
内囊出血的特征表现是A.交叉性瘫痪 B.同侧偏瘫伴偏盲 C.同侧偏瘫 D.
对判断胃、十二指肠溃疡急性大出血无意义的化验是A:血红蛋白 B:红细胞计数
A.2A B.0A C.-2A D.因Us、Is未知无法计算
甲、乙签订合同,约定由丙向甲履行债务,如果丙履行债务不符合约定,则甲有权请求(
备用信用证与其他信用证相比,其特征是在备用信用证业务关系中,开证行通常是第二付款
某汽车客运企业2015年全年发生行车责任事故17次,其中小事故8次,一般事故5次
最新回复
(
0
)