首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The lack of air pressure. B、The extremely hot or cold temperatures. C、Exposure to radiation. D、An inadequately ventilated spac
A、The lack of air pressure. B、The extremely hot or cold temperatures. C、Exposure to radiation. D、An inadequately ventilated spac
admin
2011-03-05
31
问题
Listen to a talk given by an astronaut.
Thank you. It’s great to see so many of you interested in this series on "Survival in Outer Space". Please excuse the cameras--we’re being videotaped for the local TV stations.
Tonight I’m going to talk about the most basic aspect of survival--the space suit. When most of you imagine an astronaut, that’s probably the first thing that comes to mind, right? Well, without space suits, it would not be possible for us to survive in space. For example, outer space is a vacuum--there’s no gravity or air pressure; without protection, a body would explode. What’s more, we’d cook in the sun or freeze in the shade---with temperatures ranging from a toasty 300 degrees above to a cool 300 degrees below zero Fahrenheit.
The space suit that NASA has developed is truly a marvel. This photo enlargement here is a life-size image of an actual space suit worn by astronauts on the last space shuttle mission. This part is the torso--it’s made of seven extremely durable layers. This thick insulation protects against temperature extremes and radiation. Next is what they call a "bladder" of oxygen--that’s an inflatable sac, filled with oxygen, to simulate atmospheric pressure. This bladder presses against the body with the same force as the Earth’s atmosphere at sea level. The innermost layers provide liquid cooling and ventilation. Despite all the layers, the suit is flexible, allowing free movement so we Call work.
Another really sophisticated part of the space suit is the helmet. I brought one along to show you. Can I have a volunteer come and demonstrate?
21. What is the speaker’s main purpose?
22.What would cause an unprotected human body to explode in outer space?
23.Where is the "bladder" of oxygen located?
24.What does the speaker show the audience as she describes the main part of the space suit?
25.What will probably happen next?
选项
A、The lack of air pressure.
B、The extremely hot or cold temperatures.
C、Exposure to radiation.
D、An inadequately ventilated space suit.
答案
A
解析
由于外太空是真空状态,没有重力或气压,人的身体如果没有保护就置身其中会爆炸,可见,造成人身体爆炸的原因是缺少气压。
转载请注明原文地址:https://kaotiyun.com/show/4nyK777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Recoveryfromjetlagcantakeaslongasadayforeverytimezonecrossed.Soifyou’reflyingeast-westforyourholidayoron
(91)Anactivelifestyleandahealthy,fish-richdietarenotonlygoodforyourheart,theymayalsohelptacklethememorylo
(91)Anactivelifestyleandahealthy,fish-richdietarenotonlygoodforyourheart,theymayalsohelptacklethememorylo
Aretherereallythosewhoarenightpeopleandthosewhoaredaypeople,oristhatsimplyaroutinethatcanbechanged?Scien
Researchhasshownthatcollegestudentscanlearnasmuch,ormore,frompeersastheydofrominstructorsandtextbooks.When
Oneofthethreemajorcommercialnetworks,CBSwereorganizedin1928【M1】__________whichitsfounder,WilliamPaley,acquired
Ifthisisa"Mandelamoment"forAmerica,therewere—perhapsinevitably—fewspecificcluesinBarackObama’svictoryspeechas
A、IrelandandSpain.B、BrazilandIreland.C、SpainandItaly.D、BrazilandItaly.B信息明示题。答案为B,比赛双方为巴西和爱尔兰。
Miningoperationsbytheirverynaturehavemajorimpacts,positiveandnegative,onthelocalareaandonlocalcommunities.Th
A、Theneighborsprobablywon’tlistentothewoman.B、Thewomanhastomovetoanotherplace.C、Thewomanshouldmakesomediffe
随机试题
下列哪种方法可以增加粉体的流动性
男,62岁。四肢麻木、无力3个月,行走困难,双手持物力弱。查体:四肢肌张力增高,肌力弱,有不规则感觉减弱区。Hoffmann征(+),最可能的诊断是
根据《中华人民共和国药品管理法》,药品购销记录必须注明药品的
根据《公路土工试验规程》(JTJ051—93),测定土的密度有几种方法?试述环刀法测密度的试验步骤。
质量控制资料中,反映工程质量的是()。
货币市场基金通常指到期日不足半年的短期金融工具。()
,()
5月22日是国际生物多样性日,对待外来物种的正确态度是()。
有人认为,基层干部应注重处理群众的日常事务;也有人认为应更注重发展经济,为人民谋福利。你怎么看?
Theywereexpectedtobemodelsofvirtue,honouredas______fortheircharacterasfortheirlearning.
最新回复
(
0
)