单项选择题
A.breaking the chain reaction B.smothering the fire C.cooling the fire D.coating the fuel with a nonflammable surface
Halon extinguishers used on a class C fire should be di...
单项选择题Halon extinguishers used on a class C fire should be directed at the（）.
A.base of the equipment B.top of the equipment C.power source D.source of the fire
Good housekeeping on a vessel prevents fires by（）.A.all...
单项选择题Good housekeeping on a vessel prevents fires by（）.
A.allowing better access in an emergency B.eliminating potential fuel sources C.eliminating trip hazards D.improving personnel qualifications
Generally，the first action in extinguishing an LFG fire...
单项选择题Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
A.sweep flames away with water spray B.shut off the leak C.use a chemical foam fire extinguisher D.call the local fire department
