One of the limitations of foam as an extinguishing agent is that foam ______.A.cannot be made with salt waterB.is heavier than oil and sinks below its surfaceC.is corrosive and a hazard to fire fightersD.conducts electricity

题目

One of the limitations of foam as an extinguishing agent is that foam ______.

A.cannot be made with salt water

B.is heavier than oil and sinks below its surface

C.is corrosive and a hazard to fire fighters

D.conducts electricity


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  • 第1题:

    M820主控板SNP包含两个模块分别为WASON和AGENT,其升级顺序为()

    A.先升WASON再升级AGENT

    B.先升级AGENT后升级WASON

    C.无规律


    参考答案:A

  • 第2题:

    Foam-type portable fire extinguishers are most useful in combating fires involving ______.

    A.solid materials such as wood or bales of fiber

    B.inflammable liquids

    C.electrical equipment

    D.metallic solids


    正确答案:B
    泡沫型便携式灭火器对于陷于易燃性液体火灾的扑灭最有效。

  • 第3题:

    在下图的SNMP配置中,能够响应Manager2的getRequest请求的是(70)。

    A.Agent1
    B.Agent2
    C.Agent3
    D.Agent4

    答案:A
    解析:
    在SNMP协议中,团体名相当于一个组,在进行管理时,是以团体名为单位进行管理的,基作用域也在相同团体名之内,选项中只有A和Manager2是public2在同一个基本作用域。

  • 第4题:

    As an extinguishing agent, foam ______.

    A.conducts electricity

    B.should be directed at the base of the fire

    C.is most efffective on buring gases which are flowing

    D.extinguishes by cooling oil fires below ignition temperature


    正确答案:A
    对于灭火剂,泡沫灭火剂导电。

  • 第5题:

    SNMP代理使用-操作向管理端通报重要事件的发生。在下图中,()能够响应Manager2的getRequest请求。

    A.Agent1
    B.Agent2
    C.Agent3
    D.Agent4

    答案:A
    解析:
    通过图中可以看到Manager2的共同体名是public2,而能够被此管理站管理的必将也有相同的共同体名,也就是图中的Agent1。

  • 第6题:

    Foam特效中的Physics即物理属性控制在逼真模拟中相当重要,要使得气泡往预想的方向飘动,应该对()进行数值调整。


    Wind Direction 或者 风向