首页
登录
职称英语
[originaltext] Before a new airliner goes into service, every part of it is
[originaltext] Before a new airliner goes into service, every part of it is
游客
2023-08-28
33
管理
问题
Before a new airliner goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others. In the first test, a modern airliner must fly at very high altitudes. Air must be pumped into the plane so that the passengers can breathe. The metal structure of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure on a small window, for example, is like a huge foot that is trying to get out. If a small part of the plane were to crack, the plane would explode in the sky. In order to test the structure of the plane, it is lowered into a huge tank of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is in the air. Finally, there is an explosion. Engineers can discover which part of the plane has cracked. In the second test, the test pilot must find out exactly what happens when all the engines are shut off at once. He takes the plane up very high. Then he shuts the engines off. The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they can ever carry passengers.
33. Why must air be pumped into the plane?
34. What will possibly cause the plane to crash?
35. For what purpose does the pilot shut off all the engines?
选项
A、To find out exactly what happens.
B、To save fuel to fly longer.
C、To find out where the big stone is.
D、To fly even more slowly.
答案
A
解析
细节题。短文提到,在第二个测试中,试飞员在所有的引擎被关掉时必须马上确切地找出发生了什么事。因此。本题选A。
转载请注明原文地址:https://tihaiku.com/zcyy/2964133.html
相关试题推荐
[originaltext]Americanwomenareusedtobeingindependent.Theyareusedt
[originaltext]Americanwomenareusedtobeingindependent.Theyareusedt
[originaltext]TheAmericansbelievethatanybodycanbecomePresidentofth
[originaltext]TheAmericansbelievethatanybodycanbecomePresidentofth
[originaltext]M:(22)Today,weinviteMs.Linly-nfromInternationalLaborOrg
[originaltext]M:(22)Today,weinviteMs.Linly-nfromInternationalLaborOrg
[originaltext]M:(22)Today,weinviteMs.Linly-nfromInternationalLaborOrg
[originaltext]M:Whathappenedatyourfarmwhentheearthquakepassed?W:Oh,
[originaltext]W:Youarelateagain!We’vebeenexpectingyouforanhour.For
[originaltext]W:Youarelateagain!We’vebeenexpectingyouforanhour.For
随机试题
WilliamFaulknerwasborninOxford,Miss.Hehad【1】education,thenhejoine
Massivechangesinalloftheworld’sdeeplycherishedsportinghabitsareu
【S1】[br]【S3】night→light搭配错误。表示“根据……”的短语应该是inlightto。
Energyindependence.Ithasaniceringtoit.Doesn’tit?Ifyouthinkso,
关于经济成本和财务成本区别的说法,正确的是()。A.经济成本反映微观经济,财
若学生表中存储了学号、姓名、性别、成绩等信息,则“删除学生表中所有男学生记录”的
现有A、B、C三种集料,需要合成级配为M的矿质混合料,各集料的分计筛余和合成混合
某车间进行吸声降噪处理前后的平均混响时间分别为4.5s和1.2s。请问该车间噪声
(2019年真题)根据《失业保险条例》,下列支出项目中,属于失业保险基金支出范围
会骑自行车有助于学骑摩托车,这是()。 (A)系列位置效应(B)正迁
最新回复
(
0
)