单项选择题
The best method of extinguishing a class A fire is to （）.
A.remove oxygen from the area B.smother fire with foam C.smother fire with CO2 D.cool fuel below ignition temperature
单项选择题 When approaching a fire from win ward, you should shield firefighters from the fire by using（）
单项选择题 Diesel fuel vapors （）.
单项选择题 All of the following are part of the fire triangle EXCEPT （）.
