首页
登录
职称英语
[originaltext]Before a new airliner goes into service.every part of it is teste
[originaltext]Before a new airliner goes into service.every part of it is teste
游客
2023-08-30
38
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 modem 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.
选项
A、The plane flies at high altitudes.
B、The plane is filled with air.
C、The metal structure of the plane is very strong.
D、A small part of the plane cracks.
答案
D
解析
细节题。短文提到,如果飞机中的一个小零件爆裂,飞机将在空中爆炸,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/2969989.html
相关试题推荐
[originaltext]WilmaSubrahadnointentionofbecomingapublicspeaker.Af
[originaltext]WilmaSubrahadnointentionofbecomingapublicspeaker.Af
[originaltext]WilmaSubrahadnointentionofbecomingapublicspeaker.Af
[originaltext]Recently,aprofessorofphilosophyintheUnitedStateshas
[originaltext]Recently,aprofessorofphilosophyintheUnitedStateshas
[originaltext]M:Well,today’spersonalityguestisSallyGladwin.Sally’sonlysi
[originaltext]M:Well,today’spersonalityguestisSallyGladwin.Sally’sonlysi
[originaltext]M:PleasetakemetotheBeijingHotelquickly,orI’llmissthe
[originaltext]M:PleasetakemetotheBeijingHotelquickly,orI’llmissthe
[originaltext]M:PleasetakemetotheBeijingHotelquickly,orI’llmissthe
随机试题
[originaltext]W:Isitstillrainingoutside?M:No,butthewindisstillblow
Whydosomepeoplefeelguiltywhentheydrinkcoffee?[originaltext]Coffee
与汇聚层相比较,下列不属于接入层设备选型的特点是()。A.可以使用POE
材料反映了部分公众在社会公德方面“知”“行”脱节,其主要原因不包括()。 A.
在货币市场工具中,下列关于回购的表述,正确的是()。A.回购协议是指资金需求方
零担货物运输组织原则有( )。 A.多装直达 B.合理中转 C
简述现代企业人力资源管理各个历史发展阶段的特点。
受原材料涨价影响,某产品的总成本比之前上涨了1/15,而原材料成本在总成本中的比
8岁男孩,右小腿轻微外伤后发热5天,右小腿上端肿胀,剧痛,局部皮温高,肤色正常,
最新回复
(
0
)