问答题

Usually the engines are attached under the wings, but, in the case of the modern aircraft, the two side engines are mounted on struts outboard of the fuselage.

答案: A.通常发动机安装在机翼下面,但对于现代飞机来说,两侧发动机安装在机身外侧的支柱上。
B.发动机通常在机翼下,现...
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问答题

They are operated by hydraulic pressure and are used for braking.

答案: A.他们可以用来减速。
B.他们用水压来减速。
C.他们打开水箱用来减速。
D.它们由液压驱动,...
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