当前学科:船舶动力装置
  • 题目: 单选
    The marine diesel engine is a type of diesel engine used on ships The () of its operation is not very difficult to understand.

      A . principle
      B . principal
      C . cause
      D . case

    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