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
2023-09-11
77
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/3004427.html
相关试题推荐
[originaltext]ThecolorfulInternetdrawsustocomputersandbringsusjoy
[originaltext]ThecolorfulInternetdrawsustocomputersandbringsusjoy
[originaltext]ThecolorfulInternetdrawsustocomputersandbringsusjoy
[originaltext]W:Hello,John,youmustbepleased.Afterall,howmanystudents
[originaltext]W:Hello,John,youmustbepleased.Afterall,howmanystudents
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
随机试题
•Readthetextbelowaboutjobadvertisement.•Inmostofthelines41—52there
EisteddfodinWalesisheldin______eachyear.A、JuneB、JulyC、AugustD、September
LifeSpan[audioFiles]2016m3x/audio_ezfj_173_20162[/audioFiles]LifeSpan
总包单位不按《建筑工程安全防护、文明施工措施费用及使用管理规定》和合同约定支付费
以下说法不正确的是()。A:侵入岩深度大于5公里的叫作深成岩,如花岗岩 B:
依据《通用安装工程工程量计算规范》(GB50856-2013),在编制某建设项目
女,32岁,转移性右下腹部疼痛五天,近两天疼痛加重,畏寒发热,查:全腹肌紧张,有
某地区地震后,社会服务机构派遣社会工作者到灾区开展服务,社会工作者组织志愿者发放
正确的测验观包括( )。A.心理测验是重要的心理学研究方法之一,是决策的辅助工
最新回复
(
0
)