A、 However, manufacturers may omit System/Chapters that are not applicable to the product or combine Systems/Chapters where it is feasible.
B、 However, manufacturers may adopt Systems/Chapters that are not applicable to the product or constitute Systems/Chapters when necessary.
C、 However, operators may omit Systems/Chapters applicable to the product or constitute Systems/Chapters where practical.
答案：A
A、 However, manufacturers may omit System/Chapters that are not applicable to the product or combine Systems/Chapters where it is feasible.
B、 However, manufacturers may adopt Systems/Chapters that are not applicable to the product or constitute Systems/Chapters when necessary.
C、 However, operators may omit Systems/Chapters applicable to the product or constitute Systems/Chapters where practical.
答案：A
A. 该控制组件安装在机身尾部。
B. 该控制组件安装在驾驶舱后部。
C. 该控制组件位置在驾驶舱底部。
A. 当你拆下罩环时，小心不要损坏法兰组件。
B. 当你拆下冠环扇形件时，小心不要造成法兰盘损坏。
C. 拆下法兰盘时，小心不要造成冠环扇形件损坏。
A. Dry the filter in an oven.
B. Dry the filter in the cover.
C. Dry the filter in the fire.
A. We advice you not do this procedure in the hangar.
B. We recommend that you do not perform this procedure in the hangar.
C. We are against perform this procedure in the hangar.
A. 如果安装了某一个设备，那么要说明安装它的重要性。
B. 如果安装了其中一个设备，则说明它是否是必需的设备。
C. 如果安装了两个设备，需要说明其必要性。
A. 飞机的五大结构包括机身，机翼，副翼，升降舵和起落架．
B. 飞机包括五个主要结构单元，它们是机身，机翼，安定面，飞行操纵舵面和起落架．
C. 飞机主要有五个结构部分，它们是机头，机翼，副翼，升降舵和起落架．
A. 把返回文件放在安全的地方。
B. 把备份文件放在安全的地方。
C. 把备份文件放在安全的柜子中。
A. Every maintenance item has to obey a procedure.
B. Follow the procedure to do the repair.
C. For every repair, there is a procedure for us to follow.
A. The gears will automatically engage if a malfunction occurs.
B. If there is proper functioning, the gears will automatically engage.
C. If there is a malfunction, the gears will automatically disengage.
A. Too much force can cause damage to the sealing components.
B. Excessive force may damage the seal.
C. Too much force can cause damage to the contact surface.
