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
27
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、The workers on the underground platforms were replaced by machines.
B、It became the first completely automatic railway in the world.
C、A completely automatic line was added to its network.
D、Its trains became computer-controlled.
答案
B
解析
细节辨认题。本题关键句为“The world’s first completely automatic railway has been built under the busy streets of London…The new Victoria Line was opened in l969.”1969年第一条全自动地铁在伦敦开通。故正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3482071.html
相关试题推荐
[originaltext]M:Goodeveningandwelcometo"Hardlife",theprogramthattalks
[originaltext]M:Goodeveningandwelcometo"Hardlife",theprogramthattalks
[originaltext]M:Goodeveningandwelcometo"Hardlife",theprogramthattalks
[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
[originaltext]M:Pardonme,Miss.Doyouhavechangeforadollar?W:I’mafrai
[originaltext]PoliceinSwitzerlandhaveconfirmedthataterminallyillBr
[originaltext]Harrison’sDepartmentStoreinvitesyoutoawinterclearance
[originaltext]M:Prof.Jordanhasbeenverybusythisterm.AsfarasIknow,h
Childrenmodelthemselveslargelyontheirparents.Theydoso【C1】______thro
酸奶具有丰富的营养价值和生物学功能,下列对其描述并非全部正确,其中错误的是(
下列属于前体药物的是A.甲酰溶肉瘤素 B.卡莫司汀 C.卡莫氟 D.氟尿嘧
银行的风险管理部门和风险管理委员会的关系不包括()。 A.隶属D.独立C
下列关于个体工商户的说法,错误的是()。A.资金的所有者 B.全权的经营者
长距离输电线路的铁塔基础施工测量,可根据起、止点和转折点及(),测设铁塔基
最新回复
(
0
)