首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
How many pre-constructed sections are made on land?
How many pre-constructed sections are made on land?
admin
2013-08-21
60
问题
How many pre-constructed sections are made on land?
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、Ships at sea.
B、A train from the opposite direction.
C、The powerful ocean.
答案
C
解析
最后Professor Massa提到Maglev train的不好之处就在于海洋的巨大威力对海底隧道有很大的威胁。
转载请注明原文地址:https://kaotiyun.com/show/lcVK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
A、Itwillhelpfixdangerousintersectionsofroads.B、Itwillcontributetoraisingmorefederalfunds.C、Itwillenhancethec
______youarefamiliarwiththeauthor’sideas,tryreadingallthesectionsasquicklyasyoupossiblycan.
Howmanypre-constructedsectionsaremadeonland?
Howmanypre-constructedsectionsaremadeonland?
随机试题
高等教育的大众化就是指接受高等教育人数的大量增加。()
AholidayinHollandisunlikelytocostverymuch______youstayinthetopclassluxuryhotel.
失语症患者的听理解障碍,错误的是
《建设工程监理规范》规定,在施工过程中,工地例会的会议纪要由( )负责起草,并经与会各方代表会签。
甲公司购入债券相关资料如下:(1)2×21年1月1日,甲公司以银行存款2055.5万元购入乙公司当日发行的期限为3年、分期付息、到期还本、不可提前赎回的债券。该债券的面值为2000万元,票面年利率为5%,每年的利息在当年年末支付。甲公司将该
属于美国华盛顿哥伦比亚特区的景观是()。
()不属于向上晋升的发展路径。
下列关于网页设计的说法中,正确的有()。
Itispossibletohavemorethanone(75)openinWordatthesametime.
影响文件安全性的主要因素有人为因素、系统因素和【】。
最新回复
(
0
)