Outlet pressure of control unit fails to stabilize at proper pressure.

A. 应注意起落架和控制舵面锁定机构，最小转弯半径，前起落架最大牵引负载等注意事项和限制。

B. 起落架和控制舵面锁的使用、最小转弯半径、前起落架最大牵引负载等预防措施和限制信息应引起重视。

C. 应重视注意事项和限制信息，例如起落架和控制舵面锁的使用、最小转弯半径、前起落架最大推拖负载等。

A. Because of the risk of contamination, you must do this task in a very clean environment.

B. To prevent environmental pollution, this task must be done in a very clean area.

C. In order to prevent contamination, the task you must do is to find a very clean environment.

A. Ground Control depicts minimum diameter of turning for taxiing and ground operation.

B. Ground Control describes minimum radius of turn for taxiing and ground handling.

C. The least radius of turn for taxiing and ground maneuver is described in Ground Control.

A. 确保维修飞机时不要撞到勤务箱。

B. 确保勤务车不要撞到飞机。

C. 确保勤务柜不要放在飞机的旁边。

A. 如果部件跌落，有可能会造成轻微的损坏。

B. 如果部件掉落，可能会造成永久性的损坏。

C. 部件永久性的损坏可能是由掉落造成的

A. 推荐的颠簸穿越速度

B. 推荐的尾流穿透速度

C. 推荐的乱流空气穿风速度

A. 此门在飞行中部分打开，在地面时完全打开。

B. 此门在飞行中完全打开，在地面时完全打开。

C. 此门在飞行中部分打开，在地面时也部分打开。

A. On pressurized aircraft, the cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling ventilation.

B. Distribution of cabin air on pressurized aircraft is managed with a system of air ducts leading from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling vents.

C. On pressurized aircraft cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling flap.

A. 对改变飞机重量或平衡有显著效果的设备不需要列出。

B. 对飞机重量或平衡无显著影响的设备无须包含在此清单中。

C. 对飞机重量或平衡没有显著影响的设备需要列出。

A. That portion of the system provides for rolling and stopping the aircraft while on the ground and stopping wheel rotation after retraction, including items such as swivel glands, anti-skid devices, pressure indicators, plumbing, etc.

B. That portion of the system provides for rolling and stopping the aircraft while on the ground and stopping wheel rotation after retraction, including items such as wing illumination, warning light dimming systems, pressure indicators, plumbing, etc.

C. That portion of the system provides for rolling and stopping the aircraft while on the ground and stopping wheel rotation before retraction, including items such as supply valves, anti-skid devices, pressure warning systems, plumbing, etc.