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
2024-01-24
74
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/3390044.html
相关试题推荐
[originaltext]W:Okay.Mr.Smith.Let’sbeginyourroadtest.M:Oh.IknowI’m
[originaltext]W:Okay.Mr.Smith.Let’sbeginyourroadtest.M:Oh.IknowI’m
[originaltext]W:Okay.Mr.Smith.Let’sbeginyourroadtest.M:Oh.IknowI’m
[originaltext]W:So,haveyoufoundajobyet?M:No,but,Ihaveafewleads,
[originaltext]W:So,haveyoufoundajobyet?M:No,but,Ihaveafewleads,
[originaltext]M:[12]HappyAnniversary!W:Oh,thankyou.They’rebeautiful.You
[originaltext]M:Theweatherforecastsaysitwillraintoday.W:Yeah,doesn’t
[originaltext]M:Theweatherforecastsaysitwillraintoday.W:Yeah,doesn’t
[originaltext]W:Stan,doyouhaveaminute?M:Oh,hi,Cathy,sure.What’sup?
[originaltext]W:Stan,doyouhaveaminute?M:Oh,hi,Cathy,sure.What’sup?
随机试题
Directions:Readthepassage.Thenanswerthequestions.Giveyourself20minute
Helloandwelcometothisweek’seditionofTellMeMore—theprogramwhere
Notlongago,Ihadmyfirston-linechat.Ithoughtitwouldbe【C1】______bec
[originaltext]W:John,whatareyoudoingonyourcomputer?Don’tyouremember
[originaltext]M:Isn’titveryexpensivetobuytheseclothesinParis?W:Yes,
[originaltext]Whatcanhospitalsdotohelppatientsrecoverfasterfromil
什么是空间观念?举例说明在教学中应该怎样培养学生的空间想象能力?
QDⅡ是()的首字母缩写。A.境外机构投资者 B.合格的境外机构投资者
某平原地区路基填筑,为预防路基边坡病害,可采取的措施有()。A.酌情控制填土速率
热者寒之属于A.正治、逆治 B.反治、从治 C.正治、从治 D.反治、逆治
最新回复
(
0
)