更多“The engineer hasn’t got time to track down the problem.‘To track down’ means to find out.() ”相关问题
  • 第1题:

    下面哪种说法正确? ()

    A、当主接口由up 转为down 后,立即切换到备份接口。

    B、当主接口由down 转为up 后,立即切换回主接口。

    C、当主接口由up 转为down 后,等待一定时间后,若主接口状态仍为down,才切换到备份接口。

    D、当主接口由down 转为up 后,等待一定时间后,若主接口状态仍为up,才切换回主接口。


    答案:CD

  • 第2题:

    下面当主接口由up转为down后哪种说法正确?()

    A.当主接口由up转为down后,立即切换到备份接口。

    B.当主接口由down转为up后,立即切换回主接口。

    C.当主接口由up转为down后,等待一定时间后,若主接口状态仍为down,才切换到备份接口。

    D.当主接口由down转为up后,等待一定时间后,若主接口状态仍为up,才切换回主接口。


    参考答案:C, D

  • 第3题:

    The company’s production has been put on the right ______.

    A.orbit
    B.course
    C.route
    D.track

    答案:D
    解析:
    本题考察名词,题目意为“该公司的生产已走上正轨。”A选项意为“轨道、眼眶、势力范围”,B选项意为“课程、航线”,C选项意为“航线、路”,D选项意为“轨道、路线”。固定搭配on the right track ,意为“走上正轨”。
      

  • 第4题:

    According to RFC 2328, what is the stateful order in which an OSPF router transitions to a full adjacency with a neighbor router?()

    A. Down, Init, 2 - Way, Exstart, Exchange, Loading, and Full

    B. Down, Init, 2 - Wa y, Exchange, Exstart, Loading, and Full

    C. Down, 2 - Way, Init, Loading, Exstart, Exchange, and Full

    D. Down, 2 - Way, Init, Exchange, Exstart, Loading, and Full

    E. Down, Init, 2 - Way, Loading, Exstart, Exchange, and Full

    F. Down, 2 - Way, Init, Exstart, Exch ange, Loading, and Full


    参考答案:A

  • 第5题:

    命令Backupstate-down5表示()

    A.第5种备份down状态

    B.主备份接口切换只能进行5次

    C.当主接口down状态持续5秒后,切换到备份接口

    D.当主接口逻辑通道时,如果呼叫5次未成功,则认为主逻辑通道处于down状态


    参考答案:D

  • 第6题:

    In 17th-century England, astronomy provided methods of keeping______of time that were especially useful for accurate navigation.

    A.investigate
    B.trace
    C.check
    D.track

    答案:D
    解析:
    本题考查近义词辨析。题目意为“在17世纪的英格兰,天文学提供了跟踪时间的方法,这对于精确导航特别有用。”A选项“调查”,B选项“追踪”,C选项“检查”,D选项“跟踪”,keep track of 为固定搭配,意为“记录”,故选项D符合题意。