首页
登录
职称英语
How many pre-constructed sections are made on land? [br] [originaltext]M: Good
How many pre-constructed sections are made on land? [br] [originaltext]M: Good
游客
2023-10-18
45
管理
问题
How many pre-constructed sections are made on land? [br]
M: Good evening! And welcome to the science show. We’ve heard a lot recently about extreme engineering. And one of the most amazing and astonishing ideas is a rail tunnel under the Atlantic Ocean, linking New York and London. With me in the studio to discuss this is Professor Massa. Welcome to the program, professor.
W: Thank you.
M: So, the first question, how would the transatlantic tunnel be built?
W: Well, it will be built in pre-constructed sections.
M: Urn, pre-constructed sections?
W: Yes, they would be made on land, and then put together under the sea.
M: Oh, how many of them?
W: Fifty-four thousand. They will be held in place by giant anchors which will be fixed to the bottom of the ocean. The tunnel will float 200 meters under the surface.
M: Amazing. And now as I understand it, the train running through this tunnel would be a magnetically levitated train, is that right? So what is a magnetically levitated train?
W: A magnetically levitated train, or maglev, isn’t like a conventional train. It doesn’t have wheels and doesn’t travel on rails. It travels in the vacuum between two magnets. The idea about it is an old one invented in Germany over seventy years ago.
M: And how fast does it travel ?
W: At the moment, a maglev train can travel at about 500km per hour. However, it will be possible for it to travel at 6,000km per hour.
M: Are you serious?
W: The journey from New York to London is about 5000km, and it will take 54 minutes.
M: How is this possible?
W: Well, ordinary trains travel on rails, so they can only reach a speed of around 300km per hour, and they are also very noisy. Maglev trains don’t use rails, so there’s no noise. There’s no pollution. The train would be fast, comfortable and quiet. The disadvantage is that the tracks should be specially built and they are very expensive indeed.
M: And will the transatlantic tunnel be safe?
W: Well, safety is the big problem. The ocean is very powerful, and the tunnel could be bent or cracked. Also a passing submarine or a drifting iceberg could hit the tunnel.
选项
A、In Germany.
B、In the USA
C、In the U. K.
答案
A
解析
Maglev train的想法来源于70多年前的一项德国发明。
转载请注明原文地址:https://tihaiku.com/zcyy/3109278.html
相关试题推荐
[originaltext]PersonalStudentLoans
[originaltext]TheWorldHealthDay
[originaltext]TheBottledWaterThe
[originaltext]M:Thatwasalovelyparty,wasn’tit?W:Yes,itwas.Thefoodw
[originaltext]M:Thatwasalovelyparty,wasn’tit?W:Yes,itwas.Thefoodw
[originaltext]W:Hi,Jay!M:Hi,Linda.AreyoureadyforyourbigtriptoChic
[originaltext]W:Hi,Jay!M:Hi,Linda.AreyoureadyforyourbigtriptoChic
[originaltext]M:Goodmorning,Mrs.Black.Anynews?W:Goodmorning,Mr.Brown
[originaltext]M:Goodmorning,Mrs.Black.Anynews?W:Goodmorning,Mr.Brown
[originaltext]M:Goodmorning,Mrs.Black.Anynews?W:Goodmorning,Mr.Brown
随机试题
Questions1-4Thetexthas7paragraphs(A-G).Whichparagraphcontainseachoft
[audioFiles]2014m8s/audio_ezfj_359_20144[/audioFiles]OlympicSlogan奥运口号Be
GraffitiWritersSeriousgraffitiwritersregardwhatth
进人施工现场的装修材料应核查其()等技术文件是否符合防火设计要求。A.燃烧性能
1.水泥混凝土面层作为路面工程的主要分项工程,在原材料的检验、混凝土的强度检验与
A.酸碱法B.水醇法C.醇醚法D.活性炭E.盐析法提取蛋白质常用的方法是
Thechangeinthatvillagewasmiraculou
在接案面谈时,治疗性沟通具有的功能包括()。A.提供支持 B.减轻服务对象因
商店里花布的米数是白布的2倍,如果每天卖30米白布和40米花布,几天后,白布全部
当软土层很厚,桩端达不到坚硬土层或岩层上时,采用的桩基为()。A.端承桩 B
最新回复
(
0
)