When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）<br>A:Secure all engine room doors，hatches，and vents<br>B:Close the fuel line valve<br>C:Check the spread of the fire with foam<br>D:Cast the barge off the wharf

When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）
A:Secure all engine room doors，hatches，and vents
B:Close the fuel line valve
C:Check the spread of the fire with foam
D:Cast the barge off the wharf

出自：海船船员证

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