当前学科:船舶动力装置
  • 题目: 单选
    Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and ().

      A . vanadium
      B . carbon
      C . copper
      D . ash

    答案: <查看本题扣1积分>

    查看答案

    答案不对?请尝试站内搜索