首页
登录
职称英语
The Earth has a force that pulls things toward itself. We call this force gr
The Earth has a force that pulls things toward itself. We call this force gr
游客
2024-07-24
12
管理
问题
The Earth has a force that pulls things toward itself. We call this force gravity (地心引力). This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and
选项
A、To travel as fast as it can.
B、To overcome the Earth gravity.
C、To get away from the air resistance.
D、To have strong power in its operation.
答案
B
解析
从文章的第一段最后一句“地心引力是火箭飞行中的一个重要因素,如果我们想到达太空或者离开地球,我们就必须脱离地心引力”,可以得出本题的答案应为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3691127.html
相关试题推荐
ThingsyoushouldknowaboutyourlibrarycardLibrarycardsCards
ThingsyoushouldknowaboutyourlibrarycardLibrarycardsCards
TheEarthhasaforcethatpullsthingstowarditself.Wecallthisforcegr
Thestudentsshouldbe______forthethingsthattheydo.[originaltext]形容词与不同介
Strangethingshappentotimewhenyoutravel,becausetheearthis(11)in
Strangethingshappentotimewhenyoutravel,becausetheearthis(11)in
Strangethingshappentotimewhenyoutravel,becausetheearthis(11)in
Strangethingshappentotimewhenyoutravel,becausetheearthis(11)in
Whatmakesapersoncollectthings?Oneyoungmanhas30frogs--somestuffed
Thisisoneofthethingstheyoungarebusilyengagedinseeking.A、这止是青年人热衷于追求的
随机试题
[originaltext]Lighttravelsataspeedthatisaboutamilliontimesfaster
HowmanyChineseAmericansarethereintheU.S.today?[originaltext]M:Profess
A.1V B. C.5V D.7V
CO和NH在体内跨细胞膜转运属于A.单纯扩散 B.易化扩散 C.出胞或入胞
腹泻
下列病症会引起喷射性呕吐的为( )。A.流行性乙型脑炎 B.猩红热 C.胃
按照《民用建筑设计通则》(GB50352—2005)的规定,普通建筑和构筑物的
期转现的买卖双方在约定平仓价的同时,也确定了相应的现货买卖价格。()
在电信运营企业进行网间互联谈判时,最关键、最复杂的经济问题在于()的确定。A.互
评价经干预后健康状况和社会效益的变化属于( ) A.过程评价 B.近期效果
最新回复
(
0
)