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问题:

人工接地体材料的最小规格尺寸为( )

选项

  • 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

  • 角钢板厚不小于3mm,钢管壁厚不小于4mm,圆钢直径不小于14mm

  • 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

  • 答案:

    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