279.APU正常工作时,将APU主电门置于OFF位置时,APU会发生( )When APU running normally,if set the master switch OFF,what will happen?

　立即停车 APU shutdown immediately.

　无影响,APU不会停车 no effect,APU will running continue.

　如引气活门处于打开位置,经一定延时后才停车 If the bleed valve was open, it closes and the APU enters a cool down cycle.

正确答案：C

解析：

APU正常工作时，将APU主电门置于OFF位置时，如果引气活门处于打开位置，APU会经过一定延时后进入冷却循环并停车。答案选项C是正确的，因为如果引气活门是打开的，APU会经过一个冷却周期，然后才会停止运行。这是为了确保在停止之前，APU的温度降低到安全水平。

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A330机型熟悉课程试题

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423.飞机在地面,厨房和厕所通风由( )实现通风Aircraft on the ground, the galley and toilet ventilation by

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421.增压系统的活门数是( )What is the number of valves in the pressurization system

420.地面空调接口将气体送到( )Conditioned air through ground connections to ( )

419.对飞机电线路修理时,应按照( )手册进行. Which manual should be in accordance with when the aircraft electric wire be repaired

418.下列说法正确的是( ) Which of the following is right?

417.MEL中符号”M”表示( ) What is the meaning for “m” in MEL?

416.下面关于MEL的说法哪一个是错误的( ) Which express about MEL is wrong?

415.如果飞机机身蒙皮有凹坑,要对这个缺陷进行处理,需参考什么手册() Which manual shall we use if the aircraft fuselage skin with pits and we need to process the defect?

414.AirN@V中,包括的手册有哪些( ) Which manuals are included in AirN@V?