The time between clicks must be 20 seconds.

A. The pneumatic system gets compressed air from the pneumatic air sources and supplies the compressed air through ducts to the user systems.

B. The pneumatic system gets compressed air from the pneumatic air sources and supplies the compressed air through manifold to the user systems.

C. The pneumatic system gets comprised air from the pneumatic air sources and supplies comprised the air through ducts to the user systems.

A. 起落架收上时，不要超过此速度。

B. 起落架伸出时，不要超过此速度。

C. 起落架伸出时，不要低于此速度。

A. The aircraft safety should be ensured.

B. The flight safety must be assured.

C. The navigation safety must be insured.

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. 本部分应包含一个建议，为了获得服务和信息，经销商或有证书的服务站应与飞机运营商建立沟通。

B. 此章节讲述了为获得勤务信息，经销商或有授权的服务站应与飞机运营商建立相互联系和沟通。

C. 本节应建议飞机运营商与经销商或认证服务站建立联系，以获得服务和信息。

A. 为了减少分配误差，推荐使用该方法，同时将系统和设备的功能特性告知所有者。

B. 为使辨别时产生的误差最小化，推荐使用该方法，同时对所有者说明系统和设备的使用方式。

C. 建议采用该方法，以最大程度地减少分配出错，同时使所有者获知系统和设备的可用性。

A. If the Halon extinguisher has its lever lock pin lost, you must scale the extinguisher to make sure if it is full.

B. If the hand lock pin on the Halon fire flask is not there, you must weight the extinguisher to see if it is full.

C. If the handle lock pin on the Halon extinguisher is not there, you must weigh the extinguisher to find if it is full.

A. Loosen the cross nuts [10] on reducer [7] and standby valve [8] on each end of air pressure filter assembly [1].

B. Loosen the swivel nuts [10] on reducer [7] and bypass valve [8] on each end of air pressure filter assembly [1].

C. Loosen the cotter nuts [10] on reducer [7] and bypass valve [8] on each end of air pressure filter assembly [1].

A. Procedures for handling malfunctions or other abnormalities that are not emergent, or potentially emergent may be delayed in this section.

B. This Section may cover procedures for handling malfunctions or other deviations that are not of emergency nature, or involve a potential emergency that may be handled later.

C. This Section may cover procedures for handling malfunctions or other deviations that are not emergent, or involve a potential emergency that may be deterred.

A. That portion of the system is used to perform the cranking portion of the starting operation.

B. That portion of the system is used to perform the igniting portion of the starting operation.

C. That portion of the system is used to perform the cranking portion of the igniting operation.