首页
登录
职称英语
[originaltext] Spacemen have to be specially trained for traveling in space.
[originaltext] Spacemen have to be specially trained for traveling in space.
游客
2024-03-01
63
管理
问题
Spacemen have to be specially trained for traveling in space. They should be in very good mental and physical health. Most of them are experienced pilots of very fast aeroplanes.
All spacemen have to do various space exercises before traveling to space. They have to be strong enough to bear the great pressures they will feel at launching and landing. When traveling in space or orbiting round a planet, spacemen have to become used to the weightless conditions and learn how to walk, eat, drink and sleep in a condition of weightlessness. They train for their space travels in model spacecraft, which are like the actual spacecraft. Spacemen also have to know all about the various parts of their spacecraft. They should be able to repair any part that is damaged while traveling.
When man goes into space he must take air, food and water. He must also get rid of bad air and waste matter. Food is prepared in a paste form and kept in tubes. Waste is stored in containers and got rid of when the spacecraft reaches the Earth. These problems have been solved for short space trips, but not for long trips.
选项
A、The shortage of water,
B、The shortage of food.
C、The condition of weightlessness.
D、The great pressure outside the spacecraft.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3496736.html
相关试题推荐
[originaltext]M:Isthistableinthecomerokay?W:Sure.Wecansithere.M:
[originaltext]M:Isthistableinthecomerokay?W:Sure.Wecansithere.M:
[originaltext]W:Ihavebeenlookingthroughyourapplication.Youseemtohave
[originaltext]W:Ihavebeenlookingthroughyourapplication.Youseemtohave
[originaltext]M:I’dliketocheckin,please.Ididn’tmakeareservation.W:
[originaltext]M:I’dliketocheckin,please.Ididn’tmakeareservation.W:
[originaltext]M:I’dliketocheckin,please.Ididn’tmakeareservation.W:
[originaltext]M:I’dliketocheckin,please.Ididn’tmakeareservation.W:
[originaltext]M:I’dliketocheckin,please.Ididn’tmakeareservation.W:
[originaltext]AmericanengineersPaulFloresandJimGibbsonarestudyingM
随机试题
Researchonanimalintelligencealwaysmakesmewonderjusthowsmarthumans
Thefatherwas(delight)______toseehisson.delighted根据题意,所填词在was之后,应该是形容词充当句子的
BywhatmeansdidJoethinkhecouldbecomerich?[originaltext]JoeSmithh
基本工资一般基于以下事实进行调整,具体包括()。A.通货膨胀 B.员工的技能
女,48岁。月经频发,经量增多,妇科检查:子宫大小正常,双侧附件未见异常,服用雄
家庭债务管理状况的分析是指对客户进行家庭债务管理,并提供相关专业建议的基础和前提
Thechangeinthatvillagewasmiraculou
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定规律性: A.如上图
某有顶棚的商业步行街,其两侧建筑均为地上4层、建筑高度为23m,建筑火等级为二级
巴塞尔新资本协议在原巴塞尔协议的基础上提出的标准,说法错误的是()。A.继续促
最新回复
(
0
)