首页
登录
职称英语
[originaltext] It’s great to see so many of you interested in this series on
[originaltext] It’s great to see so many of you interested in this series on
游客
2025-01-13
47
管理
问题
It’s great to see so many of you interested in this series on survival in outer space. 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 suit, it would not be possible for us to survive in space. For example, outer space is a vacuum. There’s not 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 temperature’s 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 left side’s 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 sack filled with oxygen to simulate atmospheric pressure. This bladder presses against the body with the same force as the earth atmospheric sea level. The innermost layers provide liquid cooling and ventilation. Despite all the layers, the suit is flexible allowing free movement, so we can walk. 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?
15. What will cause an unprotected human body to explode in outer space?
16. Where is the bladder of oxygen located?
17. What does the speaker show the audience as he describes the main part of the space suit?
18. What will probably happen next?
选项
A、A video tape.
B、A book.
C、A picture.
D、An oxygen tank.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3910449.html
相关试题推荐
[originaltext](1)Informationsuperhighwayisalarge-scalenationwide,orworld
[originaltext](1)Informationsuperhighwayisalarge-scalenationwide,orworld
[originaltext]W:St.LouiseCollege.ThisisRogerspeaking,canIhelpyou?M:
[originaltext]W:St.LouiseCollege.ThisisRogerspeaking,canIhelpyou?M:
[originaltext]W:St.LouiseCollege.ThisisRogerspeaking,canIhelpyou?M:
[originaltext]Ourelectriccaristhewayofthefuture.Automobilemanufact
[originaltext]Ourelectriccaristhewayofthefuture.Automobilemanufact
[originaltext]M:WecontinuewiththeWorldofInvestigation.Susan,anidentic
[originaltext]M:WecontinuewiththeWorldofInvestigation.Susan,anidentic
[originaltext]It’sgreattoseesomanyofyouinterestedinthisserieson
随机试题
Amongthemanywaysinwhichpeoplecommunicatethroughspeech,publicspeak
Inthelongest-termstudyofitskind,researcherspittedtwopopulardiets
MostofusbelievethatJohnisgoingtobe______onWednesdaybyDr.Hayesof
建筑火灾的蔓延途径包括()方向和()方向。A.水平方向 B.竖直方向
B细胞杂交瘤技术中细胞融合的选择培养基是A.HAT培养基 B.次黄嘌呤培养基
患者男性,35岁。因车祸致头部外伤,当即头痛,呕吐,随即出现昏迷,送往医院途中患
托伦斯创造性思维测验评估个体的创造性思维能力的方面包括A.流畅性 B.变通性
A.清肝利肺,降逆除烦 B.清热泻火,散风止痛 C.清胃泻火,解毒消肿 D
某公司是以重油为原料生产合成氨、硝酸的中型化肥厂,某日发生硝铵自热自分解爆炸事故
A.胎先露 B.胎产式 C.产道 D.胎方位 E.骨盆轴胎儿通过的骨盆各
最新回复
(
0
)