首页
登录
职称英语
[originaltext] (5)While flying high above the Earth’s surface, jet fighter p
[originaltext] (5)While flying high above the Earth’s surface, jet fighter p
游客
2023-06-26
63
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 speed, 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.
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 pilots have a heart attack.
D、When the pilots lose consciousness.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2783537.html
相关试题推荐
[originaltext]Tokyoisoneofthoseplacesthatyoucanloveandhateatth
[originaltext]Howmanyofyoudrinkcola?Nearlyeveryone.[16]Didyouknow
[originaltext]Howmanyofyoudrinkcola?Nearlyeveryone.[16]Didyouknow
[originaltext]W:Didn’tyouwriteapaperaboutAlbertKahnlastsemester?M:Y
[originaltext]W:Didn’tyouwriteapaperaboutAlbertKahnlastsemester?M:Y
[originaltext]W:Didn’tyouwriteapaperaboutAlbertKahnlastsemester?M:Y
[originaltext]W:[8]Areyougoingtofindajobagainthissummer?M:[8]Yes,o
[originaltext]W:[8]Areyougoingtofindajobagainthissummer?M:[8]Yes,o
[originaltext][5]/[6]FourgunmenhavebeenkilledastheIndianmilitaryhi
[originaltext][3]OPEChasdecidedthiswasnotthetimeforcuttingpetrol
随机试题
GreekMythologyGreekmythologyconcernstheancientGreekgodsandheroes,the
Accordingtothestudy,howmanypeoplereallyintendtoloseweight?[originalt
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
[originaltext]SentenceNo.1IntheUnitedStates,bigshoppingmallsandmajor
AskingQuestionsEffectivelyI.ReasonAskingtherightquestionshelpsimprov
教师能与学生取得共同语言,并能使教育影响深入学生的内心世界的做法是()。A.操
在轮椅的参数选择中,为了舒适和防止压疮,座上可放坐垫,可用A.板面离地面最少应有
铁路路基发生季节性冻胀应具备以下( )条件。A.温度低于0℃,且持续时间较长
技术指标乖离率的参数是()。 A.价格B.成交量 C.天数D.距离
甲、乙公司均为增值税一般纳税人,适用的增值税税率为13%。甲公司接受乙公司投资
最新回复
(
0
)