首页
登录
职称英语
[originaltext] (5)While flying high above the Earth’s surface, jet fighter
[originaltext] (5)While flying high above the Earth’s surface, jet fighter
游客
2023-06-30
57
管理
问题
(5)While flying high above the Earth’s surface, jet fighter pilots may suffer loss of eyesight for brief periods. Some pilots may even lose consciousness—not being able to recognize what is happening around them. These experiences, commonly called "blackouts" , can lead to tragic results.
Researchers say two different situations can lead to a pilot’s loss of consciousness. One is "G-LOC" or G-force induced Loss of Consciousness, and the other one is hypoxia, which is lack of oxygen to the brain.(6)G-LOC happens when the airplane is making a sharp turn or speeding up very quickly. During these periods, centrifugal force reduces the normal flow of blood to the pilot’s brain. At high speeds, loss of control of the aircraft has proved deadly for many pilots.(7)Hypoxia, or lack of oxygen, can affect anyone at extreme heights. That is why passenger planes are equipped with oxygen masks. Passengers are always told before flying to put on the masks in case of a sudden loss of air pressure.
Questions 5 to 7 are based on the news report you have just heard.
5. What is the news report mainly about?
6. When does "G-LOC" usually happen?
7. Why are passenger planes equipped with oxygen masks?
选项
A、When the airplane slows down very quickly.
B、When the airplane is making a sharp turn.
C、When the pilot has a heart disease.
D、When the pilot loses consciousness.
答案
B
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2796173.html
相关试题推荐
[originaltext](22)Californiaisinthemidstoftheworstdroughtonrecor
[originaltext](22)Californiaisinthemidstoftheworstdroughtonrecor
[originaltext](22)Californiaisinthemidstoftheworstdroughtonrecor
[originaltext]Considerthefactthatcropsgenerallyproduceseveralhundre
[originaltext]Thisletterishandwritten,anditisbyasurvivoroftheTi
[originaltext]M:Hello,Ihaveareservationfortonight.W:Yourname,please.
[originaltext]M:Hello,Ihaveareservationfortonight.W:Yourname,please.
[originaltext]W:AreyouallreadyforChristmas?M:Areyoukidding?(8)Ihaven
[originaltext]W:AreyouallreadyforChristmas?M:Areyoukidding?(8)Ihaven
[originaltext]Anyideawhattheworld’sbestknownEnglishlanguageis?Bef
随机试题
Nogreatscientisteverwantshispupilstobemeregramophonerecordsfaithfull
______manmustfearwhentravelinginspaceisradiationfromthesun.A、WhichB、
Thehumanbrainhastwosides,andeachsidehasdifferentworktodo.T
A
某工程现场φ25mmHRB400钢筋的焊接采用闪光对焊方式,检测结果见右表。请你
Thechangeinthatvillagewasmiraculou
关于单纯疱疹病毒,正确的是A.血液传播B.自然宿主是人C.可导致先天性感染D.引
投资者将期货作为资产配置的组成部分,借助期货能够()。A.为其他资产进行风险对
《药品经营管理规范》对零售企业陈列的要求有A.药品与非药品分区陈列,并有明显隔离
常见的心理咨询的手段不包括A.宣泄 B.领悟 C.挖掘幼年体验 D.增强自
最新回复
(
0
)