【单选题】
旅客氧气面罩在什么地方（）___
A. 在PSU面板内
B. 在行李舱
C. 在座椅背后
D. A+C
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答案
A
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地面APU运转时,APU发生火警，则以下说法正确的是1）APU会自动停车且会自动灭火。2）按压外电源面板上的APUSHUTOFF电门可关停APU。3）按出驾驶仓里APU火警按钮可关停APU。4）按压驾驶舱火警面板上的APU测试电门可关停APU___
A. A.1),2),3)
B. B.2），3）,4）
C. C.2），3）
D. D.1），2），3），4）
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发动机的FDU(火警探测组件)探测到环路B处于正常状态而环路A处于火警状态且时间超过16秒,则FDU输出___
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C. C.环路B故障信号
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APU工作时，在APU火警面板上按压TEST按钮，___
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发动机火警面板上的TEST按钮用于检查：___
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在没有通电的飞机上,将左发火警按钮按出,并按压灭火剂电门1和2,则发动机灭火瓶1和2号___
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