The subject matter, including optional information, of this section of the handbook shall conform to the following general order of presentation unless a different order is more suitable for a particular airplane.

A. 描述飞行仪器系统时，应简要描述说明任何新型飞行工具的工作法则。

B. 描述飞行仪器系统时，应简要描述并说明任何新型飞行仪器的工作原理。

C. 描述飞机飞行仪表系统时，应对任何新型飞行仪表进行简要描述并解释其工作原理。

A. 安装前先润滑密封件。

B. 安装前先把润滑油进行密封。

C. 在设备前面密封润滑油。

A. Every model has this function.

B. This function is applicable to all models.

C. Not all models have this function.

A. The rules containing in this specification shall provide a guide to the formatting, type and method of all present documents in the manufacturer＇s maintenance manual.

B. The rules in this specification are served as a guide for the format, style and way of representation for all materials contained in manufacturer＇s maintenance manual.

C. The rules contained in this specification shall serve as guides for format, style and method of presentation for all material included in maintenance manuals prepared by manufacturers.

A. Emergency illumination refers to an individual and dependent subsystem which is used to provide lighting when the main electrical power fails.

B. Emergency lighting can provide illumination for an individual and independent subsystem in case of main electrical power failure.

C. Emergency lighting is the separate and independent subsystem used to provide illumination in case of primary electrical power failure.

A. 为了从表格里提取准确的性能值，需要在中位数之间挑选。

B. 为了从表中获得准确的性能值，需要在增量值之间插值。

C. 为了从表中获取准确的性能值，需要评估增长的中间值。

A. 余下说明仅适用于装有机身油箱的飞机。

B. 装有中心油箱的飞机可以参考下面的说明。

C. 下面的说明阐述了装有机身油箱的飞机的操作规范。

A. Use protective goggles when you do work on fire extinguishers.

B. Ensure that you wear protective clothes while performing tasks on fire extinguishers.

C. Use protective gloves when working on fire extinguishers

A. 这意味着对部件和设备周围区域的检查将包括使用观察和评估的方式。

B. 这意味着检查将包括对部件周围的区域进行的观察和评估，以及对设备的检查。

C. 这意味着检查将包括对部件及设备周围区域进行的观察和评估。

A. 前区域空气调节支管减少空气量来分配前空调区域传送的噪声。

B. 前区域配平空气消音器减少输送到前空调区域的空气分配噪声。

C. 前区域调整片的空气套管输送空气到前空调区域，以减弱噪声分布程度。