人工接地体材料的最小规格尺寸为()。
(A)角钢板厚不小于4mm,钢管壁厚不小于3.5mm,圆钢直径不小于14mm
(B)角钢板厚不小于3mm,钢管壁厚不小于4mm,圆钢直径不小于14mm
(C)角钢板厚不小于3.5mm,钢管壁厚不小于3mm,圆钢直径不小于16mm
(D)角钢板厚不小于4mm,钢管壁厚不小于3.5mm,圆钢直径不小于18mm
参考答案
继续答题:下一题
(A)角钢板厚不小于4mm,钢管壁厚不小于3.5mm,圆钢直径不小于14mm
(B)角钢板厚不小于3mm,钢管壁厚不小于4mm,圆钢直径不小于14mm
(C)角钢板厚不小于3.5mm,钢管壁厚不小于3mm,圆钢直径不小于16mm
(D)角钢板厚不小于4mm,钢管壁厚不小于3.5mm,圆钢直径不小于18mm