Upon completion of fueling a gasoline driven vessel it is necessary to ______.A.keep ports，doors，windows，and hatches closedB.start engines immediatelyC.ventilate before starting engineD.None of the above
Upon completion of fueling a gasoline driven vessel it is necessary to ______.
A.keep ports，doors，windows，and hatches closed
B.start engines immediately
C.ventilate before starting engine
D.None of the above
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