It includes items such as ignition harness, high tension leads, coils as used in "low tension" systems, spark plugs, igniters, etc.

Due to frequent changes in, or varying combinations of, some types of equipment such as avionics and instrumentation, one or more separate documents for these products may be required.

A. One or more separate documents for some types of equipment such as avionics and instrumentation may be required because they change frequently or they have various combinations.

B. Some types of equipment such as avionics and instrumentation are changed regularly or combined in different forms, requiring to have one or more separate documents.

C. Some types of equipment such as avionics and instrumentation are often revised or combined differently to require one or more separate documents.

The airplane fuel system supplies pressurized fuel from the center or main tank.

A. 飞机燃油系统从中央或主油箱提供增压的燃油。

B. 飞机燃油供应系统给来自中央或主油箱的燃油增压。

C. 飞机燃油系统提供燃油，这些燃油是从中央或主油箱增压的。

If the pump is unserviceable, replace it.

A. If the pump is not suitable to be used, replace it.

B. If the pump is outmoded, replace it.

C. If the pump malfunctions, change the location for it.

This letter also provides procedures that can be used to help mitigate moisture ingress into the connector cavity until such time that the moisture problem can be resolved and a service bulletin is available to correct the problem.

A. If there is a available service bulletin to correct the problem of moisture ingress into the connector cavity,the letter then will be useless.

B. Refer to this letter to help mitigate moisture ingress into the connector cavity even if there is a available service bulletin to correct the problem.

C. If there is a available service bulletin to correct the problem that moisture ingress into the connector cavity, the letter then will provide procedures .

扰流板和副翼类似，它们也辅助并提供飞机滚转操纵。

A. The spoilers are similar to the ailerons in that they are assisting and providing control of the airplane about the longitudinal axis.

B. The ailerons are similar to the spoilers in that they are resisting and providing control of the airplane about the longitudinal axis.

C. The ailerons are similar to the spoilers in that they are resisting and providing control of the airplane about the roll axis.

The purpose of the autopilot actuator is to change electrical commands from the FCC into a hydraulically controlled mechanical output.The outputs of the actuators become inputs to the aileron and the elevator power control units(PCU).

A. The actuator receives a hydraulically controlled mechanical command from FCC who sends an electrical commands and the aileron and the elevator power control units(PCU) will carry out this command.

B. FCC sends an electrical order to autopilot actuator. The actuator converts it to a hydraulically controlled mechanical command. The aileron and the elevator power control units(PCU) will carry out this command.

C. FCC sends an electrical commands to autopilot actuator. The actuator receive it to a hydraulically controlled unit . The aileron and the elevator power control units(PCU) will carry out this command from hydraulically controlled unit.

The letters will be matt black on white.

A. 信函是白纸黑字印刷的。

B. 字母是白色背景下哑光黑色的。

C. 书信需要黑白复印件。

Deactivation/Reactivation procedures for circuits, systems, units, etc., shall be included. This is important because during maintenance, certain components may need to be deactivated for safety reasons or to prevent damage to the aircraft or equipment. It is also important to have instructions for reactivating these components once maintenance is complete to ensure that they are functioning properly and do not pose a risk to the safety of the aircraft or its occupants.

A. 停用/重新启用电路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们正常运行，不会对飞机或机上设备的安全构成风险。

B. 停用/重新启用电路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们工作正常，不会对飞机或机上人员的安全构成风险

C. 停用/重新启用管路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们工作正常，不会对飞机或机上人员的安全构成风险

Depressurize the reservoir with the manual bleed valve on the reservoir pressurization module.

A. 油箱泄压可以参考油箱增压组件的手册。

B. 用油箱增压组件上的手动引气活门给油箱泄压。

C. 手动引气活门可用来为管路加压。

In the description of the airplane＇s Electrical System, use of ground power units and battery charging shall be discussed.

A. 描述飞机电源系统时，应阐述使用地面功率组件和电池充电。

B. 描述飞机电源系统时，应阐述使用地面动力单元和电瓶充电。

C. 描述飞机电源系统时，应阐述地面电源组件和电瓶充电器的使用。