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
57
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、Energy conservation.
B、A new kind of transportation.
C、Strip cities.
D、Advantages o{ air transportation over rail roads.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3004425.html
相关试题推荐
[originaltext]Insciencethemeaningoftheword"explain"sufferswithciv
[originaltext]Insciencethemeaningoftheword"explain"sufferswithciv
[originaltext]Insciencethemeaningoftheword"explain"sufferswithciv
[originaltext]Insciencethemeaningoftheword"explain"sufferswithciv
[originaltext]AuniquelabattheUniversityofChicagoisbusyonlyatnig
[originaltext]AuniquelabattheUniversityofChicagoisbusyonlyatnig
[originaltext]M:Iwanttoregisterforthismathematicscourse.W:I’msorryr
[originaltext]M:Iwanttoregisterforthismathematicscourse.W:I’msorryr
[originaltext]W:Hello?M:Hi,May,thisisBillJohns.W:Ohhi,Bill.Youwer
[originaltext]Thegreatadvanceinrockettheory40yearsagoshowedthatl
随机试题
Thebook,WhoMovedMyCheese?,isthefirstbestsellerofSpencerJohnson.[br
Executivepaychecksmightgrabthemostheadlines,butit’stop-tiermedical
Howmanyofuswouldtempforthreeyearswhilewewaitedfortheperfectjo
搭设高度在()m及以上的落地式钢管脚手架工程应由承包单位组织专家论证制定专项工
两个共点力可以合成一个合力,一个力也可以分解为两个分力,结果都是唯一的。
A.葡萄胎 B.侵蚀性葡萄胎 C.绒毛膜癌 D.不全流产 E.难免流产葡
2020年全国农民工总量28560万人,下降1.8%,其中,外出农民工16959
下列选项中,能与所给图形组合成立方体的是()。 A.如上图所示 B.如
如果心理量和物理量画在双对数坐标上是一条直线,符合这一条件的是( )A.线性定
某甜品店如果在同一天既卖甜甜圈又卖脏脏包,则该甜品店当天一定聘请了专业甜品师来指
最新回复
(
0
)