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
5
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
Infilms,opticalprinting(can)becombinedwithblue-screenphotography(for)
语素是()A.最小的语音单位 B.最小的意义单位 C.最小的语音语义结合单位
一因车祸受重伤的男子被送去医院急救,因没带押金,医生拒绝为病人办理住院手续,当病
A.玉竹、牛膝B.炉甘石、珍珠C.樟脑、冰片D.蟾酥、牛黄E.柏子仁、苏子采用加
A.肥达试验B.O-T试验C.外斐试验D.神奈川试验E.抗O试验辅助诊断风湿热用
打开书本,一股久违了的墨香扑面而来,摩挲纸张,淡淡的凹凸感非常舒服。味觉、视觉、
同期登记:对于每一项经济业务,一方面要在有关的总分类账户中登记,另一方面在有关总
根据《中华人民共和国物权法》的规定,下列不可以作为抵押财产的是()。A.生产设
徐某被何某侮辱后一直寻机报复,某日携带尖刀到何某住所将其刺成重伤。经司法鉴定,徐
既解表散热,又疏肝和胃的中成药是A.参苏片 B.小柴胡片 C.板蓝颗粒 D
最新回复
(
0
)