Removing which will extinguish a fire?（）.

A.Motor gasoline
B.Jet fuel
C.Crude petroleum
D.Alcohol

A.authorized fire equipment servicing personnel only
B.replacing the propellent cartridge and refilling with powder
C.puncturing the cartridge seal after installation
D.recharging the cartridge and refilling it with powder

A.transferring heat across an unobstructed space
B.heated gases flowing through ventilation systems
C.burning liquids flowing into another space
D.transmitting the heat of a fire through the ship's metal