Phase letter "V" shall be used as a suffix on the cable identification code to identify the ungrounded wire or cable that is in a single-phase system.

A. Make sure that the warranty life of the material is not expanded.

B. Make sure that the retirement period of the material is not exceeded.

C. Make sure that the shelf life of the material is not expired.

A. Scrap the unit at the next check.

B. Repeat the unit at the next check.

C. Change the unit when performing next check.

A. 拆下标签。

B. 去除灰尘。

C. 移除设备。

A. The index of the maintenance manual shall be comparative to the basic standard category of Part 20. Manufacturers may, however, delete systems or sections that do not apply to their products or, where practicable, combine systems or sections.

B. The index for maintenance manuals shall be compatible with the basic standard breakdown of Section 20. However, manufacturers may omit system or chapters that are not applicable to the product or combine system or chapters where it is feasible.

C. The basic standard category of Part 20 must conform to the index of the maintenance manual. However, manufacturers may elide systems or sections that are not applied to their products, or incorporate systems or sections where applicable.

A. The introduction should be included in an alphabetical index by subject.

B. An alphabetical index by subject is to be included in the introduction.

C. The introduction includes an alphabetical index subject.

A. This tool is mandatory.

B. This tool is optional.

C. This tool is necessary.

A. 未经保护，请勿进入发动机测试区域。

B. 未经允许不得进入发动机试车区域。

C. 未经批准，请勿进入发动机测试控制中心。

A. 飞机在地面上，主起落架和门是主要支撑的部分系统，包括诸如减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

B. 主齿轮和门是飞机系统的一部分，在地面上提供主要支持。这个系统包括减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

C. 主架和门是飞机在地面提供系统主要支撑的一部分，包括减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

A. 引擎多的飞机改出螺旋程序可由代理商分别编写。

B. 多发飞机的改出螺旋程序可由制造商选择。

C. 多台发动机的改出螺旋程序可以包含在飞机制造商的操作手册中。

A. The usual control for the left pack ensures that it supplies air at a temperature. The temperature gives the occasional cooling for the flight compartment.

B. The normal control for the left pack makes sure that it supplies air. The cooling provides the necessary temperature for the flight compartment.

C. The usual control for the left pack assures that the temperature of the supplied air will provide the control cabin with the needed cooling.