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
35
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://tihaiku.com/zcyy/3412439.html
相关试题推荐
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]M:Guesswhatcameinthemailtoday?W:What?M:Myacceptancel
[originaltext]M:Hi,Jane,doyouhavesomechange?Ihavetomakeacallonth
随机试题
WhichofthefollowingisNathanielHawthorne’smostnoteworthynovelinthewor
FromhumblebeginningsinagarageinMenloPark,Californiain1998,Google
当系统发生()短路故障时,短路点处非故障相的电压随零序阻抗的增大而升高。A.三
托梁的混凝土强度等级不应低于()。A.C20 B.C25 C.C30
各类私募基金募集完毕,私募基金管理人向基金业协会报送基金备案手续的内容不包括(
下列哪个不是表面活性剂的作用()A.润湿剂 B.乳化剂 C.黏合剂
子宫颈癌的好发部位是()。A.宫颈阴道部 B.宫颈鳞-柱状上皮交界处 C.子
共用题干 患儿,女性,3岁。自幼发现心脏杂音,经常患肺炎。查体:胸骨左缘第3~
成长阶段的企业()。 A.代表着最低的风险B.现金和资本需求非常大 C.
在再保险实务中,( )是指分出公司根据自身偿付能力确定所承担的责任限额。A.接
最新回复
(
0
)