首页
登录
职称英语
What is the most important factor for a rocket to escape from the Earth? ______
What is the most important factor for a rocket to escape from the Earth? ______
游客
2024-07-30
45
管理
问题
What is the most important factor for a rocket to escape from the Earth? ______ [br] How fast will a rocket go to escape completely from the Earth’s gravity? ______
选项
A、Seventy miles per second.
B、Seven thousand miles per hour.
C、Twenty-five thousand miles per second.
D、Twenty-five thousand miles per hour.
答案
D
解析
从文章的第二段最后一句,可以得知逃离地心引力的速度是每秒7英里或者每小时2万5千英里。所以本题的答案应该是D。
转载请注明原文地址:https://tihaiku.com/zcyy/3697942.html
相关试题推荐
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
TheimmigrantsinAmericaareplayinganimportantroleinthenationalscie
随机试题
Allcountrieshaveobviousincentivestolearnfrompastmistakes,butthose
ThestatetowhichtheMayflowersailedisA、Florida.B、Maine.C、Virginia.D、Mass
INeverThoughtItCouldHappentoMe
[originaltext]WhoisthemostimportantpersonintheUnitedStates?Someo
FindingYourExcellence:BecomingWhoYouAre1.Be【T1】【T1】______Giveefforta
Generallyspeaking,Collegegraduationbringsboththesatisfactionofacade
Therewere______forSaturday’smovie.A、notavailableB、noavailableticketsC、
关于容量保护电路,下列说法正确的是A.是一次性预置保护,对额定值内的多次累积性过
根据《城乡规划法》的规定,直接用于农业用地的是( )。A.耕地 B.林地
根据《标准施工招标文件》中通用条款规定,变更指示由()签发。A.监理人 B.发
最新回复
(
0
)