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参考答案和解析

参考答案:B

更多“He is always ______ at the sound of fire alarms. ”相关问题
  • 第1题:

    Fire()at the midnight.

    A、broke down

    B、broke out

    C、broke off

    D、broke to


    参考答案:B

  • 第2题:

    下面是防火墙接口的配置命令:

    fire(config) ip address outside 202.134.135.98 255.255.255.252

    fire(config) ip address inside 192.168.46.1 255.255.255.0

    fire(config) ip address dmz 10.0.0.1 255.255.255.0

    根据以上配置,写出上图中防火墙各个端口的IP地址:

    e0:(2)

    e1:(3)

    e2:(4)


    正确答案:(2)192.168.46.1 (3)202.134.135.98 (4)10.0.0.1
    (2)192.168.46.1 (3)202.134.135.98 (4)10.0.0.1 解析:本题考查的是。
    根据配置可知,该防火墙外网IP地址为202.134.135.98,内网IP地址为192.168.46.1, DMZ区的IP地址为10.0.0.1。
    从本题的示意图可知,防火墙e0口连接内部工作站,为内网接口;防火墙e1口连接Internet,为外网接口;防火墙e2口连接内部服务器,为DMZ接口。所以:
    e0:192.168.46.1
    e1:202.134.135.98
    e2:10.0.0.1

  • 第3题:

    3、下列哪一个表述是正确:

    A.always@(posedge CLK or RST)

    B.always@(posedge CLK or negedge RST or A)

    C.always@(posedge CLK or D or Q)

    D.always@(posedge CLK or negedge RST)


    deductive,guided discovery

  • 第4题:

    ____________ fire, sound the alarm and leave the building immediately.

    A.In need of

    B.In case of

    C.In spite of

    D.In charge of


    正确答案:B

  • 第5题:

    A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the ______.

    A.Fire hose might be damaged by cargo operations

    B.Vessel is in port

    C.Fire-main system is not charged

    D.Fire pumps are used for purposes other than supplying water to the fire main


    正确答案:A

  • 第6题:

    下列描述中采用时钟clk正边沿触发且rst异步低电平复位的代码描述是

    A.always @ (posedge clk, negedge rst) if (rst)

    B.always @ (posedge clk, rst) if (!rst)

    C.always @ (posedge clk, negedge rst) if (!rst)

    D.always @ (negedge clk, posedge rst) if (rst)


    always @ (posedge clk, negedge rst) if (!rst)