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Beforeanewtypeofairplanegoesintoservice,everypartofitistestedagainandagain.Buttherear... Beforeanewtypeofairplanegoesintoservice,every partofit is tested again and again. But there are two tests that are more important than all the others.
 The first is called the"tank test".Amodemairplanemust fly very high in the sky. Air must be pumpedintothe plane so that the passengers can breathe. The metal structure (结构)ofthe plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skinofthe plane inside. The pressure (压力) onasmall window is likeahuge foot that is trying to get out. Ifasmall partofthe plane were to fail, the plane would explode in the sky. To test the structureofthe plane, the plane is loweredintoahuge tank or containerofwater. Then it is filled with air. Vne pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which partofthe plane has broken. Then that part is made stronger.
 The most dangerous test happens when thenewplane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall likeastone. It is the pilot's job to find out how he can get controlofthe plane again. These two tests are examplesofhow planes are made safebeforethey ever carry passengers
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2011-09-05 · TA获得超过201个赞
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你这里面少了很多空格,好几个单词全弄一起了

一个新的开放型飞机进入服务,它的每个部分都反复试验。但这是测试,更重要的是比所有其他。首先是所谓的“试验”。一个模式主要飞机在天空中飞得很高。必须将空气注入使乘客可以呼吸。金属结构(结构)的飞机是非常强大的,因为这个原因。当飞机是充满空气,空气压对皮肤的平面内。压力(压力)在一个小窗口,就像是一个巨大的脚试图滚出去。如果飞机的一小部分失败了,飞机会在空中爆炸。测试结构的飞机,飞机是降低到一个巨大的坦克或集装箱的水。它是充满空气。的飞机内部的压力比以往要当它是高在空气中。最后,有一个爆炸。这并不会造成太大的伤害水箱内,因为它将其他地方。工程师会发现这部分飞机坏了。然后,部分是由强大。最危险的测试时发生的新飞机正在试飞的空气。测试飞行员必须找出究竟发生在引擎(发动机)都是在关闭一次。飞机开始下降,如石头。它是飞行员的工作,找出他如何可以得到控制的飞机再次。这些测试的例子如何飞机的安全,他们之前有载客
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