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
2024-01-26
56
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:http://tihaiku.com/zcyy/3395771.html
相关试题推荐
[originaltext]Overtheyears,newtechnologieshavechangedfarming.Change
[originaltext]Overtheyears,newtechnologieshavechangedfarming.Change
[originaltext]Beethovenprobablybegantogodeafin1797,buthetriedto
[originaltext]Shorttrackspeedskatingisonlyabout100yearsoldandap
[originaltext]Shorttrackspeedskatingisonlyabout100yearsoldandap
[originaltext]Televisionnowplayssuchanimportantpartinsomanypeople
[originaltext]InSwedenandNorway,thepracticeofsplittingthebillinr
[originaltext]InSwedenandNorway,thepracticeofsplittingthebillinr
[originaltext]WithonlytwoweekstogobeforeChristmas,buyingpresentsi
[originaltext]WithonlytwoweekstogobeforeChristmas,buyingpresentsi
随机试题
•Readthearticlebelowaboutdelegation.•Inmostofthelines34-45,therei
Thenumberofexecutivebranchemployeesretiringthisfiscalyear,whichen
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoe
下列句子中,句子标点正确的有( )。A.少时,一狼径去,其一犬,坐于前 B.
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
关于监事会议事规则说法正确的有()。A:监事会会议分为定期会议和临时会议 B:
土地承包方之间出于自愿对属于同一集体经济组织的承包土地经营权进行互换的土地流转方
在人体血中白细胞群体中,中性粒细胞(DC)的正常比例范围是A.0.50~0.70
关于高层建筑管道安装的说法,正确的有()。A.管道保温及管道井,穿墙套管的
下列经济业务中,使资产与权益同减的有()。A、收回购货单位前欠货款,存入银行
最新回复
(
0
)