Do the troubleshooting procedure to find the cause of the malfunction.

A. Through releasing the handle, the gas start to inflate the slide-raft .

B. Operation of the handle releases the gas which can inflate the slide-raft.

C. The gas handle operates to inflate the slide-raft.

A. The generators supply a three-phase voltage. The frequency of this voltage increases when the generator rotor speed increases.

B. The rate of the three-phase voltage generated by the generator is proportional to the rotational speed of the generator rotor.

C. The frequency of the three-dimensional voltage produced by the generator is changed with the rotational speed of the generator rotor.

A. Lubricate the elevator tab hinges.

B. Lubricant the elevator tab links.

C. Grease the aileron tab hinges.

A. Clear the pipes in order to remove corrosion.

B. Wash the pipes so as to remove dust.

C. Flush the pipes to remove contamination.

A. 使用消毒剂清洁面罩组件。

B. 使用清洁剂对面罩组件进行清洁。

C. 使用消毒剂时应当佩戴面罩。

A. 描述飞机打光系统时，应描述各种内部和外部打光系统。

B. 描述飞机灯光系统时，应描述飞机的各个内部和外部灯光系统。

C. 描述飞机灯光系统时，应描述各种向内和向外的应急灯光系统。

A. 所有增补内容都要发给手册所涵盖飞机机型持有人。推荐这种方法的原因是尽量减少配发的错误，也通知持有人系统和设备的可用性。

B. 所有增补内容都可以发给全部机型持有人。用这样的方法可以减少文件配发错误，同时也通知所有机型持有人飞机系统和设备的可用性。

C. 所有增补内容都仅发给当时的机型持有人。以此减少错误地配发多余文件，同事也是通知该机型持有人系统和设备的可用性。

A. Detection and coding systems shall be used so that it＇s easy to isolate faults, repair routes and replace the components.

B. You should use the detecting and coding system that can help to remove faults, repair lines and change the components.

C. To facilitate troubleshooting, repair of circuits, and replacement of components, an identification and coding system should be used.

A. Handbooks shall be revised easily.

B. Handbooks should not be revised easily.

C. Handbooks should be developed easily.

A. The Boeing 747 symbolizes the beginning of a new ear in air transport.

B. The Boeing 747 is the first type of airplane in air transport.

C. Modern air transport started from the Boeing 747.