当安装分配器时，不要移动计时器。

A. If there is no approval of the FAA Oversight Office that manages the airplane model Type Certificate, anyone cannot change or delete these inspection features that are compulsive.

B. These inspection features can be changed or deleted if they don＇t get approval of the FAA Oversight Office that is responsible for the airplane model Type Certificate because they are mandatory.

C. If changing or deleting of these inspection features is approved by the FAA Oversight Office that manages the airplane model Type Certificate, they are mandatory.

A. 小心地展开薄板。

B. 小心地合上铝片。

C. 小心地打开钢片。

A. A hard landing may be the result of shock loading of the engine.

B. Shock loading of an engine may result in a heavy landing.

C. A heavy landing can cause shock loading of the engine.

A. Some jobs or processes consist of several basic operations, with a number of minor steps or work items under each.

B. Some basic operations with a few small steps or work items are included in some work or processes.

C. Some jobs or processes constitute a few basic operations, with several minor steps or work items under each.

A. Do the tightening procedure.

B. Do the loosening procedure.

C. Do the strengthening procedure.

A. 描述飞机起落架时，应说明应急展开系统。

B. 描述飞机起落架时，应描述起落架应急放出系统。

C. 描述飞机起落架时，应说明应急逃生系统。

A. Substitutes with different quality can be used.

B. You can not use substitutes with same quantity.

C. Equivalent substitutes are permitted to use.

A. 飞行环境数据和皮托静压系统包括皮托管、静电管、气温、爬升速度、空速、高速警告、高度、高度报告、高度计校正系统等。

B. 飞行环境数据和皮托静压系统包括皮托管、静压管、气温、爬升率、空速表、高速警告、高度、高度报告、高度表校正系统等。

C. 飞行环境数据和皮托静压系统包括皮托管、静压管、气温、爬升速度、气流速度、高速警告、海拔、海拔报告、海拔计修改系统等。

A. 做好排查工作，找到腐蚀原因。

B. 采用这种检修方法可以发现变形的原因。

C. 执行排故程序，以找出故障原因。

A. Before you use dangerous materials, obey these precautions:

B. Before you use dangerous materials, omit these precautions:

C. Before you use dangerous materials, disobey these precautions: