首页
登录
职称英语
[originaltext] Although I think the United States generally has an excellent
[originaltext] Although I think the United States generally has an excellent
游客
2024-06-05
30
管理
问题
Although I think the United States generally has an excellent system of transporting people between cities that .are only a few hundred miles apart, a person commuting between Detroit and Chicago, or between san Francisco and Los Angeles, so-called strip cities, may spend only a relatively short time in the air while spending several hours getting to and from the airport. This situation makes flying almost as time-consuming as driving. Moreover, airplanes use a lot of their fuel just getting into the air. They simply are not fuel-efficient on short trips.
High-speed trains may be an answer. One fairly new proposal for such a train is for something called a "maglev", meaning a magnetically-levitated train.
Maglevs will not actually ride on the tracks, but will fly above tracks that are magnetically activated. This will save wear and tear on the tracks. These trains will be able to go faster than one hundred fifty miles per hour. At that speed, conventional trains have trouble staying on the tracks. As you can see, maglevs offer exciting possibilities for the future.
选项
A、It uses nuclear energy.
B、It rests on a cushion of professional air.
C、It flies over magnetically activated tracks.
D、It uses a device similar to a jet engine.
答案
C
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3620693.html
相关试题推荐
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]M:WhatisMr.JohnsongoingtodowithhisoldhouseonParisRo
[originaltext]NowandagainIhavehadhorribledreams,butnotenoughoft
[originaltext]NowandagainIhavehadhorribledreams,butnotenoughoft
[originaltext]NowandagainIhavehadhorribledreams,butnotenoughoft
[originaltext]M:Hello.NationalExpressCourierCompany,CustomerServiceDepa
随机试题
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Attitudestowardnewtechnologiesoftenfallalonggenerationallines.That
保持政策稳定性的最根本途径是()。A.政策法律化 B.延长政策期限 C.打
患者男性,25岁,因受寒出现下肢膝踝关节剧痛,痛处不移,得热减,关节屈伸不利,无
()是指基金从业人员应当以对待自己事情一样的谨慎和注意来对待所在机构的工作
游离香豆素可溶于热的氢氧化钠水溶液,是由于其结构中存在A.甲氧基B.亚甲二氧基C
把下列的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
根据材料,回答题 一般资料:求助者,男性,31岁,研究生,公司开发人员。案例介
心理学家用三个经典实验研究了人类的从众和服从行为。谢里夫在实验中利用知觉错觉中的
水利工程保修期从工程移交证书写明的工程( )日起计算。A.完工 B.竣工
最新回复
(
0
)