Do not open the housing while the electrical power is connected.

A. 基本的控制与操作资料描述了飞机各部件和系统的控制和操作的情况，包括所使用的专用程序和限制规定。

B. 基本的控制与运营资料描述了飞机各部门和系统是怎样控制和运营的，包括所申请的专用程序和限制规定。

C. 基本的控制与操作资料描述了飞机各部件和系统是怎样控制和操作的，包括适用的专用程序和限制规定。

A. 不要加注过量燃油。

B. 不要使用未知性能的燃油。

C. 不要使用性能未知的油液。

A. For release with the ground preconditioned air connection single valve inoperative in the open position, do these steps.

B. For dispatch with the ground preconditioned air connection check valve inoperative in the open position, do these steps.

C. For release with the ground reconditioned air connection check valve inoperative in the open position, do these steps.

A. Check the bypass valves.

B. Close the isolating valves.

C. Inspect the check valves.

A. This format may be used in integra or in part.

B. This format may be used in its entirety or in part.

C. This format may be used in its tacticallity or in part.

A. Rivets can be used to separate the two stringers.

B. You can use two rivets to attach the stringers together.

C. Use rivets to connect the two stringers together.

A. 制造商可以建立程序，对在遵守时发现的不适航的状况提供反馈。

B. 制造商可以发布程序，对发现的各种不适航的状况提供建议。

C. 制造商可以建立程序，对发现的各种不安全状况提供技术支持。

A. 拆卸较大的螺帽。

B. 安装较大的螺栓。

C. 组装较大的螺钉。

A. Carry on with the test if the pressure supply is not available.

B. Ignore the test if the pressure supply is strengthened.

C. If the pressure supply stops, cancel the test.

A. Be sure that the hose is not blocked.

B. Make sure that the tubes have no deformation.

C. Ensure that the pipes are not damaged.