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
9
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
[originaltext]AlthoughAmericaisahugecountry,travelingisveryquicka
[originaltext]Now,listentoPartTwooftheinterview.W:(6-1)Andwhataresom
AprilFools’Special:History’sHoaxesHappyApr
Itisimpossibletofindoutexactlyhowmanyvolunteersareatworktodayi
关于金岳霖“式”与“能”的关系正确的是( )。A.“式”与“能”二者都是无生无
A.昏迷 B.急性腹膜炎 C.同侧锥体柬病损 D.胸11~12节病损 E
杨女士,43岁,身高160cm,体重73千克,血胆固醇4025mmol/L。每天
因受介质特性或工艺条件所限,无法排入火炬或装置处理排放系统的可燃气体,当通过排气
某男,45岁。平日喜食辛辣,脾气暴躁。近日突发头晕耳鸣、咳嗽吐衄、痰多黄稠、咽膈
A型行为性格与下列哪种疾病有关A、风心病 B、冠心病 C、神经症 D、癌症
最新回复
(
0
)