Make sure the L PACK and R PACK switches on the P5-10 Air Conditioning Panel are in the OFF position.

A. 与联络人有适用性方面的问题，可以联系工程部解决。

B. 如对本要求的适用性有疑问，请联系工程部联络人。

C. 如果适用性有问题，请联系工程部联络人。

A. Not only the basic principle of the reciprocating engine is simple, and also the assembly.

B. The basic principle of a jet engine is simple, and so is its construction.

C. The basic principle of the propeller driven engine is simple, as well as the installation.

A. 驾驶舱话音记录器还原了滑行过程中四个视频输入的信号。

B. 驾驶舱话音记录器记录了飞行过程中四个音频输入的信号。

C. 驾驶舱黑匣子记录了飞行过程中四个视频输出的信号。

A. 为了扑灭可避免的火灾，在这些区域安装了瓶装灭火器。

B. 为了扑灭可能发生的火灾，在这些区域安装了手提式灭火器。

C. 为了扑灭可能发生的火灾，在这些区域安装了固定灭火器。

A. In the event of filler bonding to the tool, dip the tool in cold water.

B. If the filler bonds to the tool, avoid using water to moisten the tool.

C. If the filler sticks to the tool, make the tool wet by applying cold water.

A. 当这种情况发生时，你可以选择使用第9级引气。

B. 当这种情况发生时，将自动使用第9级引气。

C. 当这种情况发生时，人工打开第9级引气。

A. Thus, whether the manual be a maintenance manual or a wiring diagram manual for a large airplane or a small airplane, the person wishing information concerning the indicating portion of the fuel system would refer to the Tab Chapter 28, Fuel.

B. Therefore, those hoping to obtain information about the fuel system instructions section of the repair manual or circuit diagram manual for both large and small aircraft may correspond to the label, chapter 28, Fuel.

C. As a result, regardless of the aircraft type (large or small), the person who wants to get display section information of the fuel system in the servicing manual or line diagram manual may search the tag, chapter 28, Fuel.

A. In either case, a chart will be included in showing standard symbols used throughout the manual.

B. In both cases, a figure will be contained to show the normal symptoms used in the whole manual.

C. Through the handbook, a form shall be used to show the normal signs in these two cases.

A. Fuel the aircraft.

B. Refuel the aircraft.

C. Defuel the aircraft..

A. If the repair scheme must be changed, the approval of the design authority is hardly got.

B. If the design authority need change the repair scheme, it can get the approval.

C. If it is necessary to change the repair scheme, get the approval of the design authority.