Examine the seal for defects.

A. Please stand near the moving surfaces.

B. Never stay near the removed surfaces.

C. Do not stay near the moving surfaces.

A. Rub the basin with water.

B. Flush the basin with water.

C. Fill the basin with water.

A. On some turbopropeller powered airplanes, the condition lever is the primary control for starting and stopping the engine. On others, it is the primary control used to set engine and propeller speed.

B. On some piston powered airplanes, the condition lever is the secondary control for starting and shutting the engine. On others, it is the secondary control used to set engine and piston speed.

C. On some turbopropeller powered airplanes, the status lever is the secondary control for starting and shutting the engine. On others, it is the secondary control used to set engine and propeller speed.

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. 用一些辅助螺栓来暂时安装部件。

B. 用一些附加螺丝固定组件。

C. 用一些辅助螺丝临时组装组件。

A. “细节要求”部分给特殊材质的物品进行整理和排序提供特定方法。

B. “具体要求”部分描述了特殊材料的实体的一致性布局和辨别的方法。

C. “详细要求”部分提供了编排和标识特定主题材料的统一方法。

A. 使用一种润滑油，这种润滑油可以润滑松紧螺套。

B. 使用油壶润滑松紧螺套。

C. 使用油罐润滑锁扣。

A. 速度-高度纠错系统通过修正实际速度尽可能保持飞机安全飞行高度。

B. 通过修正实际速度尽可能保持飞机安全飞行高度的任务由速度-高度纠错系统完成。

C. 速度-姿态修正系统通过修正速度的影响，自动保持安全的飞行姿态。

A. The turbines are used to extract energy from the exhaust gases and are coupled to the crankshaft.

B. The turbines can drive energy to exhaust gas and connects crankshaft.

C. The turbines can extract energy from the exhaust gases and drive the crankshaft.

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.