当前学科:中级空分工
  • 题目: 单选
    离心式低温液体泵多采用充气迷宫密封,密封气为(),气体压力要高出低温泵的叶轮背压()左右

      A . 氧气,0.02MPa
      B . 仪表空气,0.01MPa
      C . 仪表空气,0.02MPa
      D . 高压氮气,0.01MPa

    答案: <查看本题扣1积分>

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