Open one of the cabin entry doors to make sure that the cabin is not pressurized.

A. Emergency Lighting is a independent subsystem used to provide illumination in case of primary electrical power failure.

B. Urgency Lights that supply the lights when the major electronic power fails is a separate subsystem.

C. Ambulance Lights is used to supply lights if the main electrical sources malfunctions as an independent subsystem.

A. 在将飞机恢复至初始状态前，确保已完成该步骤。

B. 确保在完成该步骤前，先将飞机置于初始状态。

C. 将飞机拖回初始位置前，应确保已完成该步骤。

A. The tune time for a frequency not in memory is 2 to 4 seconds typical, 7 seconds maximum.

B. The adjust time for a frequency not in memory is 2 to 4 seconds typical, 7 seconds maximum.

C. The tune time for a frequency not in memory is 2 to 4 seconds common, 7 seconds maximum.

A. Right wing inboard flap control cable at control mechanism located in right rear wheel well is incorrectly routed and kinked.

B. The right rear wheel well right inner flap control mechanism controls the wrong alignment and is knotted.

C. Right wing inner flap control cable at control mechanism after right wheel well is incorrectly moved and twisted.

A. 螺旋桨系统包括完整的机械或电气驱动螺旋桨、泵、马达、调速器、交流发电机，以及用于控制桨叶角的发动机外部或与发动机一体的组件和部件。

B. 螺旋桨系统包括完整的机械或电动螺旋桨、泵、马达、调速器、交流发电机是用来控制桨叶角的发动机外部或整体的组件和部件。

C. 螺旋桨系统包括完整的机械或电动螺旋桨、泵、马达、调速器、交流发电机和那些组件和部件，都位于发动机外部，或者与发动机是一个整体，用于控制桨叶角。

A. The airline operator is irresponsible for ensuring that all airworthiness instructions are complied with and that the handling, servicing and maintenance of the airplane is done when required and according to the Federal Aviation Regularities.

B. The operator is responsible for ensuring that all airworthiness directives are observed and that the handling, servicing and maintenance of the airplane is done when required and in accordance with the Federal Aviation Regulations.

C. The operator has the duty ensuring that all airworthiness directives are compiled with and that the handling, servicing and maintenance of the airplane is performed when needed and in accordance with the Feudal Aviation Regulations.

A. 量规的精度必须符合适用的质量标准。

B. 选择量规必须参照已有的质量标准。

C. 采购护目镜必须满足相应的质量标准。

A. 确保飞机中心线每侧的燃油负载相等。

B. 确保飞机中心线两侧的燃油供给量相等。

C. 确保飞机中心线两侧的燃油流量相同。

A. 工作准备总是第一个步骤，收尾或收工是最后一个步骤是

B. 工作准备总是第一个步骤，收尾或收工是接下来的步骤

C. 第一个步骤有时是工作准备，收尾或收工是接下来的步骤

A. The recommended fuel conservation procedures shall contain a caution, if useful, that the power settings recommended by the manufacturer must be used during the use period of new and newly overhauled engines.

B. The recommended fuel conservation procedures shall contain a caution, if applicable, that the power settings recommended by the manufacturer must be used during the break-in period of new and newly overhauled engines.

C. The receptable fuel conservation procedures shall contain a caution, if applicable, that the power settings recommended by the manufacturer must be used during the management period of new and newly overhauled engines.