The lower seal comes into view when you pull the lower bearing down.

A. 符合规范的问题应提交给通用航空制造商协会(GAMA)和联邦航空管理局(FAA)解决。

B. 问题应符合规范，查阅通用航空制造商协会(GAMA)和联邦航空管理局(FAA)得到解决。

C. 遵守规范的问题应涉及到通用航空制造商协会(GAMA)，并提交给联邦航空管理局(FAA)解决。

A. The approved repair part must contain the skill and technology required to carry up the repair.

B. The approved repair portion shall include processes and techniques necessary for performing a repair .

C. The necessary workmanship and skills constitute the approval of the repair portion.

A. 一切排故和测试活动都要用中央维护计算机。

B. 中央维护计算机的一切排故和测试项目都被应用。

C. 中央维护计算机被用来进行所有的排故和测试活动。

A. The audio input with highest priority will be decreased by amplifier.

B. The audio input will be increased by amplifier firstly.

C. The audio input that has the highest priority will be enlarged by amplifier.

A. 加速停止距离是指飞机按照要求加速到指定速度所需的距离，并假定在达到该距离的那一刻发动机发生故障，飞机需要停止飞行。

B. 加速停止距离是指将飞机加速到指定速度，并假定在达到该速度的那一刻发动机发生故障，使飞机停止飞行所需的距离。

C. 加速停止距离是指将飞机加速到规定速度，并推测在达到该速度时发动机故障，飞机须立即停止飞行。

A. The dictionary does not include verbs sorted by trades because there are too many.

B. The dictionary excludes majors because there are too many verbs.

C. The dictionary does not include technical verbs because there are too many.

A. 描述飞机发动机时，如果有发动机火灾监测或灭火系统，请描述其工作原理，并说明如何使用。

B. 描述飞机发动机时，如果安装有发动机火警探测或灭火系统，应予以描述、解释其工作原理，并说明如何使用。

C. 描述飞机发动机时，如果有发动机火情探测或熄灭系统，请描述其工作原理，并说明如何使用。

A. The air conditioning cooling system supplies cooled air to the cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.

B. The air conditioning cooling system supplies cold air to the passenger cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.

C. The air conditioning cooling system supplies cooled air to the passenger cabin. Includes items such as the cooling pack, indicating systems related to the cooler operation, etc.

A. 这个程序包括拆卸恒速驱动装置（CSD）的说明。

B. 此程序包括删除恒速驱动装置（CSD）的指令。

C. 这个程序包括指令来去除恒速驱动装置（CSD）。

A. Make sure that the mark on the bolt is aligned with the mark on the handle.

B. Make sure that the mark on the bolt is level with the mark on the handle.

C. Make sure that the mark on the bolt is parallel to the mark on the handle.