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
2023-12-22
36
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/3295889.html
相关试题推荐
Wehavesentanordersliptoallthatwehavereasontobelieveareinterested
Shemusthavebeenpretty________tofallforsuchanoldtrick.A、interestedB、gu
[originaltext]下面你将听到的是一段有关中国经济社会发展的讲话。中国的改革开放已经走过了26个年头。26年来,中国发生了翻天覆地的变化。
[originaltext]下面你将听到的是一段有关中国教育改革与发展的讲话。党的十一届三中全会以来,随着党和国家工作重点转移到以经济建设为中心。
[originaltext]下面你将听到的是一段有关海洋的讲话。海洋是全球生命支持系统的一个不可缺少的组成部分。海洋不仅是自然资源的宝库,同时也是我
[originaltext]下面你将听到的是一段有关儿童发展的讲话。儿童的生存、保护和发展是提高人口素质的基础,直接关系到一个国家和民族的前途与命运
[originaltext]下面你将听到的是一段有关企业管理的讲话。Itstandstoreasonthatforanorganiza
[originaltext]下面你将听到的是一段有关中美交流的讲话。中美两国建交以来,人民之间的交往不断扩大。两国已缔结了33对友好省州和123对姊
[originaltext]下面你将听到的是一段有关文化方面的讲话。Whatweneedisa"CultureofTolerance"
[originaltext]下面你将听到的是一段有关减轻债务的讲话。Iwanttodaytosetdebtreductioninth
随机试题
PASSAGETWOPossiblechangesnanotechnologywillbringtous.主旨大意题。文章主要阐述了纳米技术对解决
Caffeinewillgetyougoingduringthedaybutcouldleaveyoutossingandt
[originaltext]W:Oh,Steve,you’reearly!I’mhappyyou’rehereearlytodaybec
下列情形(),当事人可以按照约定申请不动产预告登记。A.商品房等不动产预售
下列选项中,不是总监职责的是()。A.主持编写工程项目监理规划 B.参与工
检测检构参加部组织的比对试验中连续2次出现?不满意结果,要降低机构等级。()
下列疾病可以使用冷疗的是A.周围血管病变 B.软组织损伤后期 C.软组织损伤
安装时间超过()的电容器户外用高压熔断器(外熔断件)应进行更换。1年$;$3年$
2019年前三季度,我国软件业完成软件业务收入51896亿元,同比增长1
下列属于组合体系桥梁的是()A.钢管混凝土拱桥 B.斜拉桥 C.桁架拱
最新回复
(
0
)