1117. During the introductory period of the B747 alone, about 4,000 pages had to be replaced or added to the manual each month( )

3183. Refer to chapter 6 for instructions on how to park in bad weather conditions ( )

3182. the load is applied axially( )

3181. 将机轮挡好轮档。( )

3180.( )

3179. If there is fuel leakage from the couplings, repair them ( )

3178. Airplanes modified by STC are not the responsibility of ABC( )

3177. The aws are reconfigured to keep the load alleviation capability should an aileron or spoiler surface become inoperative( )

3176. 小心别把酸弄到皮肤上。 ( )

3175. The time between clicks must be 20 seconds( )

3174. System test, which may duplicate other tests, contains all adjustment specifications and tolerances required to maintain system or unit performance at maximum efficiency and design specifications( )