问题:
A . It is effective in controlling fire in flowing oil such as coming from a broken fuel line
B . It absorbs heat from materials that could cause reignition
C . Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment
D . Once the surface is blanketed with foam and the fire is extinguished,no further foam is required
● 参考解析
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