当前学科:质量员专业基础知识
  • 题目: 单选
    一般排水沟的横断面和纵向坡度不宜小于()。

      A . 0.4m×0.4m,0.1%
      B . 0.5m×0.5m,0.1%
      C . 0.4m×0.4m,0.2%
      D . 0.5m×0.5m,0.2%

    答案: <查看本题扣1积分>

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