单项选择题
A.stopping the flow of gas B.reducing the chemical chain reaction C.increasing the oxygen supply D.cooling below the autoignition point
If a fire occurs in the boiler room because of a leakin...
单项选择题If a fire occurs in the boiler room because of a leaking fuel line to a burner, you shut off the fuel using the（）
A.burner valve B.root valve C.quick closing valve D.oil return valve
Spontaneous combustion could occur in（）A.paint thinner ...
单项选择题Spontaneous combustion could occur in（）
A.paint thinner in an open can B.fuel accumulation in the bilge C.oily rags in an unvented compartment D.gasoline stored in steel drums
All classes of fires can be safely combated using（）A.fo...
单项选择题All classes of fires can be safely combated using（）
A.foam B.CO2 C.low velocity water fog D.high velocity water fog
