To obey the regulations is very important for aircraft maintenance activity.

A. 整个框架由铆钉、螺栓、螺钉和其他紧固件连接。

B. 整个机体及其部件由铆钉、螺栓、螺钉和其他紧固件连接。

C. 飞机框架及部件由铆钉、螺栓、螺钉和其他紧固件连接。

A. 标题页的背面应留白，以避免有可能漏插飞机序列号和注册号而需要修改。

B. 标题页的背面应保留空白，以避免需要修改以及有可能遗漏插入飞机的序列号和注册号。

C. 标题页的背面应保持空白，从而不用改版，也可以避免有可能漏插飞机序列号和注册号。

A. Supply airspeed instructions and the operational significance of such instructions.

B. Provide airspeed limitations and the operational instruction of such limitations.

C. Provide airspeed limitations and the operational significance of such limitations.

A. It is necessary to add fluid to the hydraulic reservoir.

B. Drain fluid to the hydraulic reservoir as necessary.

C. Add fluid to the hydraulic reservoir as necessary.

A. 直升机最常用的两类发动机是星型发动机和涡轮发动机。

B. 螺旋桨飞机最常用的两类发动机是往复式发动机和涡喷发动机。

C. 直升机最常用的两类发动机是活塞发动机和涡轮发动机。

A. 用真空清洁器和刷子清洁设备的内部及其底座。

B. 用真空清洁器和刷子清洁设备的外表面以及安装架。

C. 真空清洁设备及硬件设施的表面涂层。

A. If the airspeed values are necessary to more than one configuration, the more restrictive IAS shall be used.

B. Where the airspeed values may be applicable to more than one configuration, the more conservative IAS value shall be used.

C. The more accurate IAS value should be used where the airspeed values are mandatory to less than one configuration.

A. 如果最初的设置已更正，将在CDU显示器上显示“自动测试完成”。

B. 如果初始化设置正确，将在CDU显示屏上显示“自动测试进行中”。

C. 如果“自动测试正在进行”显示在CDU显示屏上则表明初始化设置正确。

A. The space equipment releases the air from the compound.

B. The vacuum equipment decreases the air from the compound.

C. The vacuum equipment removes the air from the compound.

A. Those instructions necessary to park or store the aircraft in normal or abnormal conditions such as with engines removed, aircraft damaged, etc.neither short-term nor long-term.

B. Instructions required for parking or storing the aircraft under normal or abnormal conditions, such as engine removal, aircraft damage, etc., which are used for short-term or long-term under extreme weather conditions.

C. Those instructions necessary to park or store the aircraft in normal or abnormal conditions such as with engines removed, aircraft damaged, etc.either short-term or long-term.