A、a Coast Guard inspection officer
B、the safety man aboard the unit
C、the designated person in charge of the unit
D、the manufacturer or his authorized representative
更多“If a fixed foam firefighting system on a ship is not of the premix type，a sample of the foam liquid must be tested by（）.”相关的问题
A、fixed foam systems to be ineffective B、faster cooling of the fire C、the accumulation of explosive gases D、the fire to spread through the ventilation system
A、A.the accumulation of explosive gases B、B.faster cooling of the fire C、C.the fire to spread through the ventilation system D、D.fixed foam systems to be ineffective
A、spray directly on the base of the fire B、flow the foam down a nearby vertical surface C、sweep the fire with the foam D、spray directly on the surface of the fire
A、spraying directly on the base of the fire B、flowing the foam down a vertical surface C、sweeping the fire before you with the foam D、spraying directly on the surface of the fire
A、It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F) B、Most foams can be used with dry chemicals to attack a fire by two methods C、Foam is effective on combustible metal fires D、Foam can be made with seawater or fresh water
A、Foam conducts electricity B、To be most effective，foam should be directed at the base of the fire C、Foam is most effective on burning liquids which are flowing D、Foam can ONLY be used to extinguish class A fires
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、Foam should not be used on electrical fires B、One kilo of low expansion foam solution produces much more foam C、Foam is only efficient when it covers the top of burning combustibles D、A stream of foam should be deflected off the deck in order to best agitate the fire
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