The main frame of the wing includes spars, ribs, stringers, integral fuel tank structure, tip tank supporting structure and frames around openings.

A. 勤务门指最开始用于为飞机系统和设备提供服务的外舱门。

B. 勤务门指主要用于对飞机系统和设备实施勤务时的接近门。

C. 勤务门即外舱门，主要用于为飞机系统和设备提供服务。

A. 除非所有固态杂质在进入设备前从空气中过滤，否则它们会卡阻，经常在转子承受范围内减缓转子的转动。

B. 除非所有固态污染物在进入仪表前从空气中去除，否则它们会积累,通常在转子轴承中，并减慢转子的速度。

C. 如果空气中所有的固态污染物不在吸入仪表前去除，它们通常会在旋翼轴上聚集，并减慢旋翼速度。

A. The following information on maneuvers appropriate to the Airplane Category shall be given: (a) A Statement of Authorized Maneuvers and Appropriate Entry Speeds (b) A Statement of Unauthorized Maneuvers (c) A Statement that the airplane is Approved for Spins, Unapproved for Spins, or is characteristically incapable of spinning.

B. The following information should be provided to the maneuver flight as appropriate: (a) A Statement of Entry Speed for Authorized Maneuvers (b) A Statement of Unauthorized Maneuvers (c) A Statement that aircraft is Unapproved or not suitable for Spinning.

C. The following appropriate information should be provided to the aircraft maneuvers: (a) A Statement of Appropriate Entry Speed for maneuvers flight (b) A Statement of Unauthorized maneuvers (c) A Statement that aircraft has been unapproved for Spins, or is characteristically incapable of spinning.

A. However, manufacturers are following the same fundamental systems and sequence of subject arrangements even if some systems, which are not available, may be bypassed.

B. Nevertheless, each manufacturer is expected to follow the same sequence of basic system and subject arrangements even though some systems may be omitted when not applicable.

C. Even so, all manufacturers are expected to submit to the same arrangements of main systems and subject sequences even though certain systems would be ignored when not applicable.

A. To make sure that ATC transceivers are in standby mode, you must simulate altitude, otherwise false TCAS signals may occur intermittently.

B. Make sure the ATC transmitters are in standby mode, or false TCAS targets may occur accidentally due to altitude simulation.

C. Make sure that the ATC transponders are in standby mode when you simulate altitude. You can accidentally cause false TCAS targets.

A. 在记录卡上做登记。

B. 在记录本上做账目。

C. 进入到记录本的登记中。

A. 如有必要进一步减小钢索张力，可使用松紧螺套。

B. 如有必要进一步降低钢索张力，可使用张力计。

C. 如有必要进一步调节钢索长度，可使用旋转带子。

A. Rapidly and fully retract Ram Air Turbine and make sure that it doesn＇t attach to other parts.

B. Slowly and fully extend Ram Air Turbine and make sure that it doesn＇t touch other parts.

C. Make sure that the Ram Air Turbine is completely opened and it doesn＇t touch the other unit.

A. 描述飞机飞行控制系统时，如果操作增强，说明系统。

B. 描述飞机飞行控制系统时，用系统说明操纵增强。

C. 描述飞机飞行控制系统时，如果安装了控制增强系统，应对相应的系统进行描述。

A. 确保襟翼和副翼微调手轮已收回并处于零位置。

B. 确保襟翼收起到零位，且副翼配平手轮处于零位。

C. 确保襟翼收上，副翼配平手轮处于零位。