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
2024-01-27
46
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、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/3399804.html
相关试题推荐
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]OnehundredandthirteenmillionAmericanshaveatleastone
[originaltext]Anearthquakemeasuring6.7ontheRichterscalehashitnort
[originaltext]WhenthetopU.S.oilcompaniesannouncedhugeincreasesinp
[originaltext]Forseveralyears,humanresourcesdirectorPeteTapaskarsay
随机试题
Theaccountantneedstofinalizetheexpensereportbeforenoontomorrownomatt
Healthyadultstakeapproximately10-14breathsperminute,butsomepeople
Itrainedheavilyinthesouthduringthelastfewmonths,________itdidlittle
It’sobviousthatyouhurtmyfeelingonpurpose,soit’snouse______(make)an
Inmanycountries,authorityisseldomquestioned,eitherbecauseitishigh
Theadoptionofthenewpolicywouldrel
IEEEE802.11i标准制定的无线网络加密协议()是一个基于(请作答此
巨大动静脉畸形栓塞术后或切除术后数小时或数天发生的临近部位的脑出血和脑水肿最可能
阅读《与朱元思书》教学案例的“教学过程”部分,完成下题。 环节一:导入课文
采用排油注氮灭火装置应符合哪些要求?(A)排油注氮灭火系统应有防误动的措施。
最新回复
(
0
)