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
第1题:
A.先升WASON再升级AGENT
B.先升级AGENT后升级WASON
C.无规律
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
第3题:
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
第5题:
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。