【单选题】
关于中央油箱通气系统说法正确的是___________
A. 中央油箱向左通气油箱通气
B. 中央油箱向左和右通气油箱通气
C. 中央油箱自己有通气系统
D.
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答案
A
解析
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大翼内部传输valve何时打开___
A. 任一大翼外侧油箱的低油位传感器变干时
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【单选题】
以下说法正确的是：___
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A. A．RAT在空中可收回
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