2. 建筑工程
  3. 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( )A.30s,30s B.20s,30s C.30s,20s D.25s,25

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( )A.30s,30s B.20s,30s C.30s,20s D.25s,25

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问题 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(  )
选项 A.30s,30s
B.20s,30s
C.30s,20s
D.25s,25s
答案A
解析2018新版教材P312 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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