单项选择题

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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单项选择题

A.not
B.no
C.any
D.none

单项选择题

A.abeam
B.dead astern
C.just forward of the beam on either side
D.on either side of the stern

单项选择题

A.lapped construction
B.strapped construction
C.joggled construction
D.belted construction