全淹没系统干粉灭火剂喷射时间一般不大于( ),干粉贮罐的增压时间也不大于( )
2023-06-03
A.30s,30s
B.20s,30s
C.30s,20s
D.25s,25s
参考答案:A
B.20s,30s
C.30s,20s
D.25s,25s
参考答案:A
教材P334
全淹没系统干粉灭火剂喷射时间一般不应大于30s。干粉贮罐的增压时间也不大于30s
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