The primary document containing the procedures for the continued airworthiness of an airplane is the airplane＇s maintenance manual.

A. After the system is pressurized, the elevators will drop down no matter where the rigging pin is installed.

B. Without the rigging pin, the elevators will go down when there is no pressure in the system.

C. The rigging pin can prevent the elevators from retracting and expanding when the system is de-energized.

A. Make sure that chemical compound are not near the engine nozzle.

B. Make sure that solvents are not near the engine exhaust.

C. Make sure that there＇s no isopropyl alcohol near the engine exhaust port.

A. “力臂”是物体重心到基准面的水平距离。

B. “力臂”是物体重心到参考面的垂直距离。

C. “力矩”是物体中心到参考基准面的距离。

A. This software is only acceptable by the assigned handling system.

B. This software is compatible only with the specified operating system.

C. This software only corresponds to its designed operating system.

A. Transfer the rod in the contrary directivity.

B. Remove the rod in the contrast direction.

C. Move the rod in the opposite direction.

A. Turn the adjuster clockwise to increase 60 Deg.

B. Turn the adjuster counterclockwise in increments of 60 Deg.

C. Decrease 60 Deg. to turn the adjuster counterclockwise.

A. 找出液压油渗漏的源头。

B. 找出滑油溢出的源头。

C. 找出燃油泄漏的源头。

A. 给飞机电路断电。

B. 给飞机电路通电。

C. 重新连接飞机的电路。

A. 气缸盖、排气（涡轮进口）温度等能通过发动机温度系统显示。

B. 发动机温度系统包括气缸盖、排气（涡轮进口）等，用于显示发动机温度。

C. 发动机温度系统用于指示发动机不同位置的温度，包括气缸盖温度、排气（涡轮进口）温度等。

A. Replace the defective booster pump.

B. Remain the present booster pump.

C. Recharge the failed booster pump.