单项选择题
Halon extinguishes fire primarily by（）.
A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
点击查看答案&解析
相关考题
-
单项选择题
Halon extinguishes a fire by（）.
A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface -
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 -
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
