Fuel oil tank vents are fitted with a screen which will stop（）.<br>A:oil from flowing out of the tank vent<br>B:air from entering the tank vent<br>C:vapors from leaving the tank vent<br>D:flames on deck from entering the tank vent

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

出自：海船船员证

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