试题与答案

简述HSRP有哪几种端口状态?

题型:问答题 简答题

题目:

简述HSRP有哪几种端口状态?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:简单

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题型:阅读理解
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题型:单项选择题

下列关于档烟垂壁说法错误的有:()

A.观察活动式挡烟垂壁的下降,使用秒表、卷尺测量挡烟垂壁的电动下降或机械下降运行速度和时间。卷帘式挡烟垂壁的运行速度大于等于0.07m/s

B.翻板式挡烟垂壁的运行时间小于7s。挡烟垂壁设置限位装置,当其运行至上、下限位时,能自动停止

C.采用加烟的方法使感烟探测器发出模拟烟火灾报警信号,或由消防控制中心发出控制信号,观察防烟分区内的活动式挡烟垂壁能自动下降至挡烟工作位置

D.切断系统供电,挡烟垂壁不应动作

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