Soak the area with warm water.

A. 在升降飞机时，要确保操作升降设备的人员接受过恰当的培训并具备相应的知识。

B. 在对飞机进行平衡、顶升或放下时，确保人员接受过升降设备的培训并掌握相关技能。

C. 当水平放置飞机或顶升飞机时，确保操作升降设备的人员学过培训知识。

A. 后缘襟翼有25个以上的组件。

B. 后缘襟翼超过25个单位。

C. 前缘襟翼超过25个单位。

A. 本程序给出了不同的扭矩范围以及相应的规定。

B. 本文件给出了不同的扭矩值和其适用的条件。

C. 本程序给出了适用的差异扭矩值和条件。

A. Explain how to check them for proper operation and how to recognize a malfunction.

B. Describes how to check that they are functioning properly to identify faults.

C. Describes how to identify these failures so that these systems can function properly.

A. If the unit is not modified, its service life will be possibly shorter.

B. Without the modification of the unit, its service life is likely shorter than present.

C. Without the modification, it is possible that the service life of this unit will be shorter than usual.

A. A small child should sit in an unlimited seat.

B. A small child needs to sit in a seat with safety device.

C. A small child could sit in an adult seat.

A. The introduction should be included in an alphabetical index by subject.

B. An alphabetical index by subject is to be included in the introduction.

C. The introduction includes an alphabetical index subject.

A. 技术动词是指示性的词汇，提供有关特定技术和操作的信息。

B. 技术动词用于描述指示和信息，以适用于特定的技术和操作环境。

C. 技术动词在特定的技术和操作语境中给出指示和信息。

A. Propeller governor is a device that adjusts the speed of the engine or propeller by increasing or decreasing the clearance of the propeller through the clearance changing mechanism on the propeller hub.

B. Propeller governor is the device that regulates the rpm of the engine or propeller by increasing or decreasing the propeller pitch, through a pitch change mechanism in the propeller hub.

C. Propeller governor is through the propeller hub of the propeller pitch changing machine, adjusts the speed of the propeller or engine by increasing or decreasing the propeller gap.

A. 当主轮舱有火的时候，轮舱热量缺陷控制器会给两个红色警灯和警铃一个信号。

B. 轮舱里的过热故障控制器会提供一个信号给两个红色警灯和警铃，当主轮舱有火的时候。

C. 当主轮舱有火的时候，轮舱里的过热探测控制器会提供一个信号给两个红色火警灯和警铃。