381.It has a single shaft and operates at a constant speed.

A. 用干净的毛巾清洁表面。

B. 用干净的布擦表面。

C. 用干布擦表面。

A. 不要将压缩空气出口对着你的皮肤。

B. 不要使压缩空气吹到皮肤。

C. 不要将压缩空气对准蒙皮。

A. 对现有分析进行了审查,以确定可能表现出较低安全裕度的部件和区域。

B. 对现有分析进行复核,对部件和区域进行标识,以显示出较低安全裕度。

C. 对于安全裕度较低的部件和区域进行标识并进行了现场分析审查。

A. 检查密封件是否有缺陷。

B. 检查封胶是否有缺损。

C. 检查封严是否有缺失。

A. All essential or alternating equipment installed on a particular plane when provided shall be in the equipment list.

B. The equipment list shall include all necessary or alternative equipment installed on a particular aircraft when delayed.

C. The equipment list shall contain all required or optional equipment installed in the particular airplane when delivered.

A. 对涡轮发动机来说,排气系统包括发动机本体以外的部件。

B. 对涡轮发动机来说,排气系统包括发动机主系统内的装置。

C. 对涡轮发动机来说,排气系统不包括发动机主系统以外的装置。

A. Because of the risk of contamination,you must do this task in a very clean environment.

B. To prevent environmental pollution,this task must be done in a very clean area.

C. In order to prevent contamination,the task you must do is to find a very clean environment.

A. L1 entry door life vests were not installed by flight crew.

B. Life vests at L1 entry door flight crew station not install.

C. Life vests were not installed at L1 entry doorflight crew station.

A. After the valid date of this amendment,a newly produced aircraft's pilot's manual must be approved by FAA.

B. After this revision date,FAA must approve a newly produced aircraft's pilot's manual .

C. After the effective date of this revision,Pilot's Operating Handbooks for newly manufactured airplanes must be FAA Approved Airplane Flight Manuals.

A. The purpose of radar is to obtain,process and display image information.

B. Grasping,processing and displaying grafic information is the function of radom.

C. The purpose of radar is to transmit,process and caculate image information.