Flight surfaces are the structure of removable airfoils attached to the wing including items such as ailerons, flaps, spoilers, tabs, drag and balancing devices, etc.

A. Apply a layer of sealant on the top access panel.

B. Apply a layer of solvent on the top access panel.

C. Apply a layer of sealant on the bottom access panel.

A. 供给系统有这些用处。

B. 分散系统有这些功能。

C. 分配系统有这些功能。

A. 包含飞机持续适航程序的主要文件是飞机的维修手册。

B. 主要文件包括飞机初始适航程序，称为飞机维修手册。

C. 飞机维修手册的主要文件包括飞机持续运行程序。

A. 如果探头互相碰触，它们就会失去磁性。

B. 如果两个探头互相接触，它们就会失效。

C. 如果探针互相撞击，它们就会被磁化。

A. Manufacturers＇ recommended time limits, maintenance checks and inspections (both planned and unplanned) are arranged in Chapter 5.

B. Manufacturers＇ recommended time limits, maintenance checks and tests (both scheduled and unscheduled) are arranged in Chapter 5.

C. Manufacturers＇ recommended time limits, maintenance checks and inspections (both scheduled and unscheduled) are arranged in Chapter 5.

A. 描述飞机燃油系统时，应阐述燃油进风系统及其堵塞的后果。

B. 描述飞机燃油系统时，应描述燃油通气系统及其堵塞时的后果。

C. 描述飞机燃油系统时，应阐述燃油进气系统以及允许其堵塞的重要性。

A. 表1中列出的研磨剂是备选的，你可以选择使用。

B. 表1给出了可以使用的替代粘合剂。

C. 你只能使用表1中列出的等效粘合剂。

A. The airworthiness problem needs to be resolved by the way any other airplane does in the operator＇s fleet has equal or more damaging corrosion, and it has to be done before the regular check of that zone.

B. The airworthiness problem needs immediate action ahead of the next planning inspection of that zone, because it would probably occur on another plane in the operator＇s fleet, causing equivalent or more serious corrosion.

C. Due to any other airplane in the operator＇s fleet could have the comparable or more vital corrosion, the airworthiness problem should be investigated immediately before the next periodic inspection of that zone.

A. 不要使钢索散开。

B. 不要使电缆扭结。

C. 不要使导线绞缠。

A. 给出适用于危险物品的安全说明。

B. 给出适用于爆炸物品的安全说明。

C. 给出已申请的爆炸物品安全说明。