单项选择题
A large oil fire is best extinguished with（）
A.soda acid
B.foam
C.CO2
D.sand
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相关考题
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单项选择题
Fires in escaping flammable gas are quickly brought under control by（）
A.stopping the flow of gas
B.reducing the chemical chain reaction
C.increasing the oxygen supply
D.cooling below the autoignition point -
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 -
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
