The air portion includes units from the scoop inlet to the vapor vent return, and the impeller chamber.

A. 始终遵守如下保持电线处于良好状况的法规。

B. 始终遵守预防措施，然后保持电线处于良好状况。

C. 始终遵守如下预防措施以保持电线处于良好状况。

A. 写作规则包括语法和文体观点。字典给出了撰写人可以使用的一般词汇。

B. 写作规则包括语法和文体方面。字典给出了撰写人可以使用的一般词汇。

C. 写作规则包括语法和文体细则。字典给出了撰写人可以使用的全体词汇。

A. To improve the safety operations, airspeeds shall be a preface to the Normal Procedures Section.

B. The airspeeds shall be provided as an introduction to enhance the safety operations.

C. The airspeeds which may enhance the safety of operations shall be provided as a preface to the Normal Procedures Section.

A. Before you move the spoilers, tell all persons to get off the wings.

B. Before telling all persons to get off the wings, you move the ailerons.

C. Before you move the ailerons, tell all persons to get off the wings.

A. 将气缸提升至上方位置后进行安装。

B. 将气缸的安装位置提升到上方。

C. 将气缸提升至其安装位置的上方。

A. Do not lift the aircraft on jacks if the wind speed is more than 20 MPH.

B. Do not hoist the aircraft on chocks if the wind speed is more than 20 MPH.

C. Do not raise the aircraft on jacks if the wind speed is more than 20 km/h.

A. This configuration has three rest data for all the inertial and air data functions.

B. This configuration has triple redundant data for all the inertial and air data functions.

C. This configuration has three rest data for all the interface and air data functions.

A. 燃油从HMU流向燃油流量传感器。

B. 燃油流经HMU和燃油流量传感器。

C. 从燃油流量传感器出来的燃油流到HMU。

A. The form of the climb performance presentation is decided by the airplane manufacturer.

B. The format of the cruise performance presentation is at the discretion of the airplane manufacturer.

C. The form of the cruise performance presentation is at the discretion of the airplane manufacturer.

A. “非计划性勤务”包括对于停放的飞机进行除冰除雪、在过长时间的停车后对星型发动机进行预先润滑等方面的说明。

B. “非计划性勤务”包括对于停放的飞机进行除冰除雪、在长时间停车后对活塞发动机进行预先润滑等方面的说明。

C. “非计划性勤务”包括对于停放的飞机进行除冰除雪、在过长时间的停车后对活塞发动机进行润滑等方面的说明。