Chapter 22 is about those units and components which furnish a means of automatically controlling the flight of the aircraft. Includes those units and components which control direction, heading, attitude, altitude and speed.

A. This tool is mandatory.

B. This tool is optional.

C. This tool is necessary.

A. Remove the smooth areas with cotton cloth if you find them.

B. If you find alligatored areas, remove them with cotton cloth.

C. If there are rough areas, remove them with emery cloth.

A. If an annunciator panel TRANSIT light fails to illuminate while the corresponding device is in motion, then this light must be considered inoperative.

B. When related device is in operation and if annunciator panel TRANSIT light comes on, so this light does not work.

C. The light is considered to be available if the annunciator panel TRANSIT light goes off when the related device is in motion.

A. 确保杆之间有合适的间隙。

B. 确保杆之间有合适的角度。

C. 确保杆之间有足够的间隙。

A. 将温度计调到摄氏温标。

B. 将温度计校准到华氏温标。

C. 调整摄氏温标的温度计。

A. 辅助结构包括前缘、后缘、翼尖、翼尖油箱和燃油或水单元隔板，不包括镀层/蒙皮。

B. 辅助结构包括前缘、后缘、翼尖、翼尖油箱和燃料或水电池背板，不包括板/皮。

C. 辅助结构包括前缘、后缘、翼尖、尖端燃料箱和燃料或水电池背板，不包括板/蒙皮。

A. 本规范第0.9部分要求的表格内容可以采用补充材料的日志（或清单）形式。

B. 本规范第0.9段要求的目录可以采用补充材料的日志(或清单)形式。

C. 本规范第0.9节要求，表格内容可以在补充材料的日志（或清单）中。

A. Only representatives from ASD can join the group.

B. Representatives from countries that are not members of ASD are hardly to take part in the group.

C. Both representatives from ASD and from countries that are not members of ASD can join the group.

A. 确保指示灯点亮后叶片展开。

B. 确保叶片打开时指示灯点亮。

C. 确保叶片展开的过程中指示灯点亮。

A. Oxidation occurs very easily.

B. Oxygen occurs very easily.

C. Nitrogen occurs very easily.