当前学科:船舶动力装置
  • 题目: 单选
    Fuel injection valves should be taken out, cleaned, and lifting checked every ().

      A . two to four months
      B . four to six months
      C . six to eight month

    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