The avionic compartments have: - heat and sound insulation, - maintenance lighting, - air-cooled racks for the electrical and electronic equipment and their related units.

A. 不能使用缩写，除非有意义。

B. 不能使用缩写直到它们有通用意义。

C. 除非缩写具有普遍意义，否则不得使用缩写。

A. 为避免不必要的磨损，将表面涂漆。

B. 为避免不必要的颗粒，将表面清洁。

C. 为避免不必要的摩擦，将表面抛光。

A. 本规范涉及FAA的各种调节。

B. 本规范参考了各种FAA条例。

C. 本规范称作FAA的各种规章。

A. 飞机结构制造商可以将其它非复杂项目信息并入手册。

B. 对于剩余的非复杂项目，机体制造商将信息并入作为手册的一部分。

C. 作为对保留的非复杂项目的处理，机体厂家可以将其信息纳入手册。

A. Move the hose to make sure that the inner connection is stable.

B. Move the tube to ensure that the inner connection is loosen.

C. Move the tube to make sure that the inner connection is tight.

A. 使用探针检查管子以找出堵塞物。

B. 检查探头以确定是否堵塞。

C. 仔细检查管道以清除堵塞。

A. Structural fasteners are not included in the normal maintenance items, they are provided separately in the maintenance information.

B. Structural fasteners do not belong to normal maintenance items, so the maintenance information does not include this part of the content.

C. Some structural fasteners can be repaired during normal maintenance, so the maintenance information includes the corresponding content.

A. Add 5 ml of hardener to the compound.

B. Add 5 ml of adhesive to the compound.

C. Put 5 ml of hardener to the component.

A. The shock absorber is a telescopic oleo-pneumatic unit.

B. The shock absorber is a flexible hydraulic-pneumatic unit.

C. The shock strut is an elastic oil-air unit.

A. If the lamp is too weak, charge the battery.

B. If the light is too strong, do a replacement of the battery.

C. If the light is not bright, the battery should be replaced.