单选题Fuel oil tank vents are fitted with a screen which will stop（）.Aoil from flowing out of the tank ventBair from entering the tank ventCvapors from leaving the tank ventDflames on deck from entering the tank vent
单选题
Fuel oil tank vents are fitted with a screen which will stop（）.
A
oil from flowing out of the tank vent
B
air from entering the tank vent
C
vapors from leaving the tank vent
D
flames on deck from entering the tank vent
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