The forward and aft cargo electronic units are identical.

A. 手册中可包括其他的程序，这些程序适用于飞机操作。

B. 与飞机操作有关或必要的其他程序可包括在手册中。

C. 说明中应包括飞机操作相关或适用的其他程序。

A. 参考修订FAR21.50的格式，应保持与使用的规范一致。

B. 修订应以FAR 21.50规定为基础，与其规范的格式一致。

C. 修订FAR 21.50规章的格式，应参考使用修订规范的格式要求。

A. 本部分用于相同的安排方法和识别特定主题材料。

B. 本部分规定了安排和识别某些主题材料的同类方法。

C. 本部分提供了安排和识别特定主题素材的统一方法。

A. 拆下故障部位后部的标签。

B. 排除故障后，拆下标签。

C. 出现故障后，拆下铆钉。

A. Before you move the spoilers, tell all persons to get off the wings.

B. Before telling all persons to get off the wings, you move the ailerons.

C. Before you move the ailerons, tell all persons to get off the wings.

A. 处理边缘锋利的零件时要戴手套。

B. 处理边缘有凹痕的零件时要戴手套。

C. 当接触边缘有锯齿的零件时要戴手套。

A. Make the attitude of the valves the same.

B. Make the positions of the valves agree.

C. Make the altitude of the valves agree.

A. 由于尺寸、设计或器材的变化，需要对绘图进行修改。当绘图上有这样的修改时，要注意对字母和数字进行的修改，并在修改栏的符号上列出这些修改。

B. 由于尺寸、设计或材料的变化，需要对图纸进行修改。当图纸上有这样的修改时，要注意用字母或编号标出这些修改，并在修改栏里对照符号列出这些修改。

C. 由于尺寸、设计或材料的变化，需要对图纸进行修改。当图纸上有这样的修改时，要注意对字母和数字进行的修改，并在修改栏的符号上列出这些修改。

A. Explain when there is any change to the weight or force distance of the airplane, how to keep this record so as to acquire right starting data by calculating the weight and c.g. during normal operation of the airplane.

B. Explain how to maintain this record when changes to the weight or moments of the airplane are made so that accurate starting data is available to calculate the weight and c. g. during normal operation of the airplane.

C. In order to get correct starting data during abnormal operation of the airplane, the weight and c. g. should be calculated and explain how to keep this record when there are changes to the weight or moments of airplane.

A. These buses consume power directly from the battery.

B. These buses accept the direct current of battery.

C. The battery supplies power directly to these buses.