2231.In the description of the airplane's Engine,if an engine fire detection or extinguishing system is available,describe,give principle of operation,and explain how to use these.

A. 应说明最小机组人数,以及如果需要一名以上飞行机组人员时,还应说明每个机组人员的职责。

B. 需要一名以上飞行机组人员时,应说明最小机组人数和每个机组人员的职能说明。

C. 请按要求说明机组成员人数,以及每位机组成员的职能。

A. 如果滤子在极短的时间堵塞,送到实验室进行污染分析。

B. 如果滤子使用期间出现异常,请对污染物进行适当的检测。

C. 实验室污染分析用于防止滤子在短时间内堵塞。

A. Do not refuel the aircraft during maintenance.

B. Do not defuel the aircraft in the period of maintenance.

C. Stop refueling the aircraft before maintenance.

A. Adjust the lever intentionally and reset the system to the neutral position.

B. Move the lever before setting the system to the neutral position again.

C. In case of an inadvertent lever movement,return the system to the neutral position again.

A. 飞机维修手册或章节包括说明性资料,如对飞机的维修或预防性维修的特点和资料所做的说明。

B. 飞机维修手册或章节包括说明性资料,如对飞机的结构和数据给出维修或预防性维修程度的说明。

C. 飞机维修手册或章节包括说明性资料,如对维修或预防性维修所需要的飞机特性和数据的说明。

D. B.飞机维修手册或章节包括说明性资料,如对飞机的结构和数据给出维修或预防性维修程度的说明。

E. C.飞机维修手册或章节包括说明性资料,如对维修或预防性维修所需要的飞机特性和数据的说明。

A. 手册建议您在气流良好的区域制备混合物。

B. 制造商建议您在气流良好的区域制备混合物。

C. 制造商强调您在气流良好的区域制备混合物。

A. Troubleshooting can only be performed after the cause of the malfunction has been found out.

B. You should perform troubleshooting according to the procedure and find out the technical failure.

C. According to the procedure,perform the troubleshooting to solve the cause of the malfunction.

A. Solenoid switches shall indicate whether the valve is solenoid-loaded to the open or closed positon.

B. Electromagnetic valves shall include a marking indicating whether the valve is coil-loaded to the open or closed positon.

C. Solenoid valves shall include a notation indicating whether the valve is spring-loaded to the open or closed positon.

A. When you move the alternate nose wheel steering switch to the alternate position,the landing gear transfer valve moves to the alternate position.The landing gear transfer valve moves the pressure source for the landing gear retraction and the nose wheel

B. When move the alternate switch to steer the nose wheel to the alternate position,the landing gear transfer valve moves to the alternate position.The landing gear transfer valve moves the pressure source from hydraulic system A to hydraulic system B duri

C. When moving the alternate nose wheel steering switch to the alternate position,the landing gear transfer valve moves to the alternate position.The landing gear transfer valve removes the pressure source from the landing gear retraction and the nose wheel.

A. 对于飞机维修中的行为,法规中规定的要求很重要。

B. 了解法规的要求对于飞机维修来说非常重要。

C. 在飞机维修活动中,遵守法规是非常重要的。