首页
登录
职称英语
[originaltext] (5)While flying high above the Earth’s surface, jet fighter
[originaltext] (5)While flying high above the Earth’s surface, jet fighter
游客
2024-02-01
49
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 speeds, 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.
Questions 5 to 7 are based on the news report you have just heard.
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 pilot has a heart disease.
D、When the pilot loses consciousness.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3412439.html
相关试题推荐
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]W:Wheredoyouthinkweshouldgoontheholidaythissummer?M:
[originaltext]M:Guesswhatcameinthemailtoday?W:What?M:Myacceptancel
[originaltext]M:Hi,Jane,doyouhavesomechange?Ihavetomakeacallonth
随机试题
Whowillmakeatelephonecall?[br][originaltext]26.M:Hi,Jane.Um...do
Inabout45years,temperaturesonEarthwillbehotterthanatanytimedur
[originaltext]W:Dave.I’mgoingtothesupermarkettopickupfoodanddrinkf
设,则f(x)的极小值为()。{图1}
在膳食营养素参考摄入量(DRIs)中,能满足某特定性别、特定人群中50%个体营养
综合理财规划建议包括()。A.理财目标建议 B.现阶段的各项支出预算的建议
A.PPI类 B.枸橼酸铋剂 C.阿莫西林和甲硝唑 D.前列腺素E E.
某药店销售的安乃近片的主药含量超过国家标准规定,该药品为A.假药 B.劣药
下列关于固定资产弃置费用的表述中,错误的是()。A.取得固定资产时,按弃置费用
急性肝衰竭时不可能出现( )。A.转氨酶正常 B.胆红素正常 C.血小板减
最新回复
(
0
)