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
2024-03-03
16
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 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. 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. 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
[听力原文]
If no signal is sent from the command spot, what will happen to the train?
[听前预测] 根据选项中的stop,move,slow down,keep a safe distance等词可推断本题询问火车运行过程中的有关问题。
[答案详解] 事实细节题[考频:63]。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://tihaiku.com/zcyy/3502353.html
相关试题推荐
[originaltext]Hi,everyone!Theoldsayinggoes,"You’reonlyasyoungas
[originaltext]Hello,everyone.Today,I’dliketotalkaboutmotivation.Mo
[originaltext]Hello,everyone.Today,I’dliketotalkaboutmotivation.Mo
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]GailArmandandRobertVanSluishadaplanfortheirretirem
[originaltext]GailArmandandRobertVanSluishadaplanfortheirretirem
[originaltext]GailArmandandRobertVanSluishadaplanfortheirretirem
[originaltext]GailArmandandRobertVanSluishadaplanfortheirretirem
[originaltext]Studentswhostruggledearlyonwithbasicreadingandmaths
[originaltext]Studentswhostruggledearlyonwithbasicreadingandmaths
随机试题
PanasonicNV-F55MCoperatingInstructionsⅠ.Installation(Ⅰ)
Forthispart,youareallowed30minutestowriteanessaybasedonthepict
计算住宅给水设计秒流量的卫生器具给水当量的同时出流概率,下列哪一个概念是错误的?
以下关于电子支付的描述中,错误的是______。A.电子支付以计算机技术和网络技
下列各项中,( )要求评估对象符合相关经济行为对资产范围的要求,能够有效实现其预
A.经胎盘感染B.经皮肤感染C.经口感染D.直接接触感染E.蚊媒叮咬阴道毛滴虫
患者,男性,73岁。高血压病史20年,伴慢性心功能不全,给予地高辛每日维持量治疗
缺铁性贫血 A.血清铁蛋白增高,血清铁增高,总铁结合力增高B.血清铁蛋白增高,
绩效考核是人力资源管理的一项重要活动,其目的是( )。A.促进员工个人、所在部
某公司目前的资本来源包括每股面值1元的普通股800万股和平均利率为10
最新回复
(
0
)