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
74
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://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
Accordingtotheannouncement(报道),whichofthefollowingstatementsiscorrect
Readashortpassageandlistentoatalkonthesametopic.ReadingTi
除上述定量预测方法之外,该公司还用定性方法预测了承包额。可采用的定性预测方法为(
按照《公路水运工程试验检测信用评价办法(试行)》的有关规定,试验检测机构的信用等
血栓的形成条件,正确的有()。A.血管内膜损伤 B.血液凝固性增高 C.血
股票的参与性是指股票的持有人有权()。 Ⅰ.出席股东大会 Ⅱ.参与公司重大
2020年全国农民工总量28560万人,下降1.8%,其中,外出农民工16959
按平均成本定价,计算公式为( )。A.P=F+Cv+r B.P=Q+Cv+r
一些招工单位提出的用人条件,动辄就是大本以上学历,本来有些工种普通技工即可胜任,
污染物排放量核算污染源包括()。A.新增污染源及改建、扩建项目污染源 B.新增
最新回复
(
0
)