【单选题】
984.(A320)巡航时按压厕所冲水电门，真空泵却没有工作___
A. A.真空泵故障
B. B.另一个厕所刚刚按压了冲水电门
C. C.高度电门断开
D. D.以上皆有可能
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答案
C
解析
暂无解析
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下列说法不正确的是？___
A. 真空泵是离心式的
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C. 废水箱顶部的液面传感器是超声波式
D. 马桶座杯由钛合金制成，内侧涂覆不粘涂层
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当按压冲洗电门时，真空马达（）___
A. 在空中不工作
B. 在地面或在低高度，高度电门闭合时工作
C. 直接通电，使真空马达工作
D. 给乘务员信号，由乘务员控制真空马达的工作
【单选题】
列描述正确的是（）___
A. 厕所勤务面板打开时，真空马达不工作
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D. 以上都正确
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外接电源可用的情况下，用加水勤务车给飞机水箱加水，当水箱被加满后（）___
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【单选题】
以下说法正确的是（）___
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【单选题】
饮用水水系统的排放valve（）___
A. 前后排放valve都只能机械控制打开
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D. 后排放valve可电控操作打开
【单选题】
319飞机卫生间水龙头的热水是如何得到？___
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C. 通过位于水龙头下部的一个自动控制的加热恒温器
D.
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