281、 The ventilation system uses differentia pressure to pull air out of the airplane

1208、机身上有三个千斤顶顶点。

1207、Illustrations should be used whenever they will simplify , shorten, or make the text easier to understand.

1206、The fuel vent system keeps; the pressure of the fuel tanks near the ambient Pressure. Too large a pressure difference cancause damage to the wing structure.

1205、Identify the component with a code to help you to install it again correctly.

1204、取液压油油样。

1203、重复拆装会导致自锁螺母自锁功能失效。

1022、用软布对表面抛光,e 直到它变得有光泽。

1201、在 STE 电,不允许使用小写字母的单词。

1200、在高压环境下工作时,应遵守安全注意事项。

1199、厨房地板上方的水分可以通过地板表面的小洞渗入,肉眼是看不到的。