Not only the switches but also the old wiring ______ changed.A. haveB. areC. have beenD. has been

题目

Not only the switches but also the old wiring ______ changed.

A. have

B. are

C. have been

D. has been

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更多“Not only the switches but also the old wiring ______ changed. A. have B. are C. ”相关问题

  • 第1题：

    （74）

    A．routers

    B．stations

    C．servers

    D．switches


    正确答案：B

  • 第2题：

    Refer to the exhibit. All multilayer switches are running PIM dense mode. Recipient A and Recipient B are sending IGMPv2 joi n messages to their respective multilayer switches. Which statement is true?（）

    A. The Multicast Server is the root of the multicast tree. Switches 1, 3, 4, and 5 will participate in the multicast tree once pruning has taken place.

    B. The Multicast Serv er is the root of the multicast tree. Switches 4 and 5 will participate in the multicast tree once pruning has taken place.

    C. Switch 3 is the root of the multicast tree. Switches 3,4, and 5 will participate in the multicast tree once pruning has taken place.

    D. Switch 3 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.

    E. Switch 1 is the root of the multicast tree. Switches 1,4, and 5 will participate in the multicast tree once pruning has taken place.

    F. Switch 1 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.


    参考答案：A

  • 第3题：

    用vi打开一个文件，如何用字母”new”来代替文件中所有的字母”old”

    A．:r/old/new

    B．:s/old/new

    C．:1,$s/old/new/g

    D．:%s/old/new/g


    B

  • 第4题：

    You are a network techn ician, study the exhibit carefully. All multilayer switches are running PIM sparse mode. Host CKB and Host CKF are sending IGMPv2 join messages to their respective multilayer switches. Which description is correct?（）

    A. Switches 1, 2, 3, and 6 will part icipate in the multicast tree once pruning has taken place.

    B. Switches 2 and 6 will participate in the multicast tree once pruning has taken place.

    C. Switches 1, 2, 3, and 6 will participate in the multicast tree.

    D. The multicast server is the rendez vous point of the multicast tree.


    参考答案：C

  • 第5题：


    Which of the following does the author cite in support of the quotation from the United Nations Scientific Committee on the Effects of Atomic Radiation？( )Ⅰ.Strontium 90 and carbon 14 become incorporated into the body and deliver radiation for an entire lifetime.Ⅱ.An abnormally high percentage of patients with arthritis of the spine who were treated with X rays contracted cancer.Ⅲ.A high incidence of cancer appeared among children of mothers who had been given prenatal pelvic X rays.

    A.Ⅰ only.
    B.Ⅰ，Ⅱ，and Ⅲ.
    C.Ⅰ and Ⅱ only.
    D.Ⅱand Ⅲ only.

    答案：D
    解析：
    细节题。根据题干关键词United Nations Scientific Committee on the Effects ofAtomic Radiation可定位到第三段。这段列举了Ⅱ和Ⅲ两个例子，D项正确。

  • 第6题：

    查看MySQL中支持存储引擎的语句是 。

    A．SHOW ENGINS; 和 SHOW VARIABLES LIKE 'have%';

    B．SHOW VARIABLES; 和 SHOW VARIABLES LIKE 'have%';

    C．SHOW ENGINS; 和 SHOW ENGINS LIKE 'have%';

    D．SHOW ENGINS; 和 SHOW VARIABLES from 'have%';


    SHOW ENGINS; 和 SHOW VARIABLES LIKE 'have%';

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