1792.The dust cap on the air charging valve is removed,the external air source is connected to the valve stem and the swivel nut turned to open the air charging valve.

A. 逆时针快速地转动副翼驾驶盘。

B. 顺时针快速地旋转扰流板控制手轮。

C. 逆时针快速地控制副翼操纵机轮。

A. This system does not supersede the normal channels of communication for items not covered by the CAP.

B. This system will not change the normal ways of communication for items not listed by the CAP.

C. The normal methods of communication for items contained in the CAP will not be shifted.

A. 不要使用其他未经批准的动词短语。

B. 不要使用其他未经批准的动词时态。

C. 不要使用其他未经批准的动词词组。

A. Timely check the instruments for accuracy.

B. Instuments shuld be periodically checked for accuracy.

C. Timely check the instruments if it is accurate.

A. Each surge tank has a vent scoop and pressure relief valve on its access door.

B. The vent scoop and pressure relief valve each has an access door in the surge tank.

C. The surge tank has a vent scoop and pressure relief valve on each access door.

A. Put a plug on the open end of each pipe.

B. On the opening of each pipe,put a cover.

C. Put a cover on the loose end of the pipe.

A. 这个笔记本电脑有三个备用部件。

B. 笔记本电脑有三个主要部分。

C. 这个螺钉有三个主要部分。

A. This procedure is only for repairs that include a very small number of screws.

B. This procedure is only for repairs that include a very small number of nuts.

C. This procedure is only for repairs that include a very small number of rivets.

A. 这些组件和部件产生、控制、分配和点燃部件的燃料气缸,为活塞式发动机或涡轮发动机的燃烧室或推力增强器中的空气混合物提供电流。

B. 这些组件和部件能够产生、控制、分配用于点燃活塞发动机的气缸以及涡轮发动机的燃烧室或加力燃烧室中的油气混合气所需的电流。

C. 这些单元和部件产生、控制、分配和点燃部件的燃料气缸,为涡喷式发动机或涡轮发动机的燃烧室或推力增强器中的空气混合物提供电流。

D. C.这些单元和部件产生、控制、分配和点燃部件的燃料气缸,为涡喷式发动机或涡轮发动

E. C.这些单元和部件产生、控制、分配和点燃部件的燃料气缸,为涡喷式发动机或涡轮发动机的燃烧室或推力增强器中的空气混合物提供电流。

A. 结构或设备的改装可以改变基本质量和重心坐标。

B. 结构或设备大修可以造成基本质量和重心协调的改变。

C. 基本质量和重心改变后需要进行结构或设备的改装。