单选题:仓库或堆料场应分组设置泡沫、二氧化碳等灭火器,每组灭火器之间的距离不应大于( )m.

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题目内容:
仓库或堆料场应分组设置泡沫、二氧化碳等灭火器,每组灭火器之间的距离不应大于( )m. A.20
B.25
C.30
D.50
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