当前学科:临床预防服务
  • 题目: 单选
    ()is the most visible signal of distress from a lifeboat at sea in the daytime.

      A . Smoke signal
      B . Flash signal
      C . Fire signal
      D . Radio emergency transmissio

    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