The vacuum equipment removes the air from the compound.

A. 用净水清洗内表面。

B. 用温水清洗外表面。

C. 用冷水清洗外表面。

A. In a complicated system, troubleshooting is made up of four chapters.

B. Troubleshooting in a complex system consists of four sections.

C. Four processes are combined to troubleshoot the complicated system.

A. 安装活门和正确的垫圈。

B. 安装阀门和对应的封圈。

C. 安装接头和相应的垫片。

A. The manufacturer shall include a description of the type service information issued by the manufacturer and the office or department to contact to get such information that the aircraft may be maintained in accordance with the latest information.

B. The manufacturer shall include a description of the type service information issued by the manufacturer and the office or department to contact to obtain such information so that the aircraft may be maintained in accordance with the latest informatio

C. The factory shall include a description of the type service information issued by the manufacturer and the office or department to contact to obtain such information so that the aircraft may be maintained related to the latest information.

A. 在设计的概要图里，可能需要在让图表内容详实和便于阅读理解的简单之间妥协。

B. 在设计原理图时，可能有必要在使图不言自明所需要的细节和易于阅读和理解所必需的简单之间作出折衷。

C. 在设计插图的过程，涵盖细节来让图表自行展示且方便阅读和理解是有必要的。

A. If possible, do an engine ground run to make sure that you get the same indications.

B. If possible, run the engine on the ground to confirm that you get similar indications.

C. In order to verify the instructions, engine run-up should be possibly conducted on the ground.

A. 拆除部件之前，给系统充气。

B. 安装部件之前，给系统释压。

C. 断开部件之前，给系统放气。

A. When it is unlikely that the temperature decreases to -20 ℃, remove the batteries.

B. If it is possible that the temperature will decrease to -20 ℃, remove the batteries.

C. If it is possible that the temperature will decrease to -20 ℃, cut the cells.

A. 描述飞机飞行控制系统时，应说明平衡设置。

B. 描述飞机飞行控制系统时，应对相应的配平装置进行描述。

C. 描述飞机飞行控制系统时，应解释配平安排。

A. This document compliments informaiton to the applicable airplane maintenance manual(s).

B. This document provides necessary informaiton to the applicable airplane maintenance manual(s).

C. This document provides supplemental informaiton to the applicable airplane maintenance manual(s).