单选题:细水雾灭火系统用于保护室内油浸变压器时,变压器高度超过4m的,局部应用方式的开式系统的喷头(  )。

题目内容:
细水雾灭火系统用于保护室内油浸变压器时,变压器高度超过4m的,局部应用方式的开式系统的喷头(  )。 A.宜分层布置
B.应能保证细水雾完全包络或覆盖保护对象或部位
C.应能使细水雾完全覆盖集油坑
D.不应直接对准高压进线套管

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