A、couducts electricity
B、should be directed at the base of the fire
C、is most effective on burning gases which are flowing
D、extinguishes by cooling oil fires blow ignition temperature
更多“As an extinguishing agent,foam（）.”相关的问题
A、Electrically non-conductive B、Relatively inexpensive C、Effective against chemicals containing an oxidizer D、All of the above
A、A.conducts electricity B、B.should be directed at the base of the fire C、C.is most effective on burning gases which are flowing D、D.extinguishes by cooling oil fires below ignition temperature
A、lack of toxicity B、the multipurpose extinguishing ability C、burn-back protection D、cooling ability
A、lack of toxicity B、the multipurpose extinguishing ability C、burn-back protection D、cooling ability
A、lack of toxicity B、the multipurpose extinguishing ability C、bum-back protection D、cooling ability
A、dry chemical or foam B、foam or soda acid C、carbon dioxide or foam D、carbon dioxide or dry chemical
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
A、a mattress B、spilled liquids such as oil or paint C、high voltage electrical gear D、a trash can
A、a mattress B、spilled liquids such as oil or paint C、high voltage electrical gear D、a trash can
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