首页
登录
职称英语
What is the topic of the talk? [br] [originaltext] Although I think the Unit
What is the topic of the talk? [br] [originaltext] Although I think the Unit
游客
2024-09-28
42
管理
问题
What is the topic of the talk? [br]
Although I think the United States generally has an excellent system of transportation, I don’ t think that it does a good job 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. Magievs 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 150 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 pressurized 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/3778054.html
相关试题推荐
PresidentObamaplanto[br][originaltext]OfficialsinWashingtonsayPres
PresidentObamaplanto[originaltext]OfficialsinWashingtonsayPresident
Whatisthenewsitemmainlyabout?[br][originaltext]Theamountofproduc
Whatisthenewsitemmainlyabout?[originaltext]Theamountofproductstha
Wherecanpeopletakeadulteducationcourses?[br][originaltext]Millions
Wherecanpeopletakeadulteducationcourses?[originaltext]Millionsofpe
Modernholistictreatmentfocuseson______.[br][originaltext]Theoldestf
Modernholistictreatmentfocuseson______.[originaltext]Theoldestformso
TheapartmentisfurnishedwithallthefollowingEXCEPT[br][originaltext]M:
TheapartmentisfurnishedwithallthefollowingEXCEPT[originaltext]M:Gooda
随机试题
Thehonestyoungman______thebossthathewouldtryhisbestfortheexcellen
屋顶的类型与建筑物的屋面材料、屋顶结构类型及建筑造型要求等因素有关。
关于Ⅳ高脂血症的描述错误的是A.LDL↑ B.血清外观浑浊 C.电泳深前β带
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律。 A.如上
护士发现血液检查血红蛋白与血细胞比容持续降低提示A、细菌感染 B、有活动性出血
硫酸镁的中毒现象首先表现为A、呼吸减慢 B、心率减慢 C、尿量减少 D、血
断流阀宜采用(),应能直接观察阀门(),具有手动复位功能。(A)
马克思主义诞生的标志是( )。A.《共产党宣言》的发表 B.中国共产党的成立
申请期货公司首席风险官的任职资格,应当具有从事期货业务3年以上经验,并担任期货公
下列施工安全检查项目中,属于季节性专项检查的有( )。A.防暑降温 B.施工
最新回复
(
0
)