In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system, there must be ______.A.fuelB.oxygenC.ignitionD.All of the above
In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system, there must be ______.
A.fuel
B.oxygen
C.ignition
D.All of the above
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