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
2024-02-01
39
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、It is required by the laws and the government.
B、The air pressure is rather low above the Earth’s surface.
C、The passengers will lose consciousness in the planes.
D、Lack of oxygen can affect anyone at extreme heights.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3412440.html
相关试题推荐
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]M:Guesswhatcameinthemailtoday?W:What?M:Myacceptancel
[originaltext]M:Guesswhatcameinthemailtoday?W:What?M:Myacceptancel
[originaltext]M:Guesswhatcameinthemailtoday?W:What?M:Myacceptancel
[originaltext]M:Hi,Jane,doyouhavesomechange?Ihavetomakeacallonth
[originaltext]M:Hi,Jane,doyouhavesomechange?Ihavetomakeacallonth
随机试题
(1)WhenIaminaserioushumor,IveryoftenwalkbymyselfinWestminster
NarratorListentopartofalectureinamassmediaclass.Nowgetreadytoans
What’stheprobablerelationshipbetweenthesetwospeakers?[originaltext]W:Jo
Howdidchildrenfeeltobewithher?Thechildrenwerealways______tobewith
运输需求的变动是()。A.曲线的移动 B.需求函数的参数发生了变化 C.自
下列关于矿井供电系统及电气设备操作安全技术中,错误的是( )。A.井上下不准带
粪便呈黑色或柏油样,质软富有光泽,常见于A.进食大量绿色蔬菜 B.上消化道出血
患者,男,50岁。因门静脉高压症进行脾肾分流术,出院健康指导时,以下哪项措施是针
数列:2,2,,1,,
若因变压器()保护动作跳闸,除检查低压母线外,还应检查配电分路开关保护是
最新回复
(
0
)