The pump did not operate because the shaft was broken.

A. To depressurize the braking system, operate the hand pump handle through its full travel.

B. To inflate the braking system, operate the hand pump handle through its full travel.

C. To bleed the braking system, operate the hand pump handle through its full travel.

A. 对于小部分飞机设计、操作或操纵特性所特有的紧急情况，应提供安全操作所必需的应急程序和其他相关信息。

B. 对于特定飞机设计、操作或操纵特性所关注的紧急情况，应提供安全操作所必需的应急程序和其他相关信息。

C. 对于特定飞机设计、操作或操纵特性所特有的紧急情况，应提供安全操作所必需的应急程序和其他相关信息。

A. 有24片宽弦钛合金风扇叶片。

B. 有24片宽弦合金钢风扇叶片。

C. 有弦宽为24的钛合金风扇叶片。

A. The APU fire alarm system accumulates the same fire alarm in the flight deck as in the engine.

B. The APU fire warning system actuates the same fire warning in the flight compartment as the engines.

C. The APU fire warning system activates the same fire warning in the cockpit as for the engines.

A. Compressed air will push contamination into the display unit.

B. The display unit will be contaminated by compressed air.

C. Air pressure will push the dirt into the display unit.

A. When the crossfeed system is open, it is possible for one fuel pump to supply fuel to the two engines.

B. When the supplying system is open, it is possible for one fuel pump to supply fuel to the two engines.

C. One fuel pump can supply fuel to two engines,as the supplying system is open.

A. 改版是指对现有数据进行更新。

B. 手册修订是指对其内容进行升级更新。

C. 修订是指对现有手册中信息的修改。

A. 仅B747刚引进时期，每个月就有4000页必须从手册中删减或增加进手册。

B. 在B747引进时期，仅每个月必须替换或增补的手册就有4000页以上。

C. 在B747刚引进的阶段，仅一个月就需要更换或增加约4000页到手册中。

A. 水和甲醇的混合物增加了发动机的功率。

B. 水和乙醇的混合物增加了发动机的功率。

C. 水的混合物和丙醇增加了发动机的功率。

A. 检查厕所快速增压装置。

B. 检查厕所快速减压装置。

C. 检查厕所定期减压装置。