局部接地极采用面积不小于()m2、厚度不小于()mm的钢板或具有同等有效面积的钢管制成,并应平放于水沟深处。
A. 0.6 ,5
B. 0.6 ,3
C. 0.75, 5
D. 0.75, 3
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根据《煤矿安全规程》的规定:哪些地点应装设局部接地极?
M1: Did you watch the football match on TV last night?M2: Yes. I never miss a single football match.M1: You are really crazy about football.