The rudder is used for yaw control, that is control of the aircraft around vertical axis.

A. The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.

B. The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.

C. The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.

A. The distribution system is used to store and distribute air pressure.

B. Distribution system is used to induct and distribute air.

C. Air inlet system is used to distribute air to all systems.

A. 如果电缆扭结，那么一段时间后会断开。

B. 如果导线摩擦，过段时间后会断裂。

C. 如果导线摩擦，过段时间将会破损。

A. 如果刹车片接触到盘，根据文件移开不需要的材料。

B. 如果托架触碰到板，用锉刀去除不需要的材料。

C. 如果撑杆触及盖板，用填充剂移开不合适的材料。

A. 描述飞机刹车系统时，应说明如何识别已经发生的问题以及发生错误时应采取的措施。

B. 描述飞机刹车系统时，应说明如何识别可能会发生的问题以及发生故障时应采取的措施。

C. 描述飞机刹车系统时，应说明如何识别即将发生的问题以及失灵时做什么。

A. The charged resister acts as a primary battery.

B. The discharged resister acts as a secondary battery.

C. The charged capacitor behaves as a secondary battery.

A. 这个程序只能用在自动模式下。

B. 这个程序只适用于模拟方式。

C. 这个程序仅适用于数字模式。

A. The rules containing in this specification shall provide a guide to the formatting, type and method of all present documents in the manufacturer＇s maintenance manual.

B. The rules in this specification are served as a guide for the format, style and way of representation for all materials contained in manufacturer＇s maintenance manual.

C. The rules contained in this specification shall serve as guides for format, style and method of presentation for all material included in maintenance manuals prepared by manufacturers.

A. 用于密封油箱的所有材料对所有燃油和燃油稳定剂都耐用。

B. 用于密封油箱的所有材料对所有燃油和燃油添加剂都耐用。

C. 用于密封油箱的所有材料对所有燃油和燃油添加剂都防水。

A. The pneumatic system gets compressed air from the pneumatic air sources and supplies the compressed air through ducts to the user systems.

B. The pneumatic system gets compressed air from the pneumatic air sources and supplies the compressed air through manifold to the user systems.

C. The pneumatic system gets comprised air from the pneumatic air sources and supplies comprised the air through ducts to the user systems.