Fishing gear fouled（）propeller.

单项选择题Fishing gear with buoys ahead（）you.

A.of
B.on
C.for
D.at

单项选择题It is（）to anchor in your present position.

A.danger
B.dangered
C.dangeroused
D.dangerous

单项选择题A long blast to warn the vessels（）vicinity.

A.in
B.on
C.at
D.for

单项选择题CO2 cylinder weighed（）normal weight.

A.light than
B.lighter
C.light
D.lighter than

单项选择题Vessel（）still to bunker 50 tones of fresh water.

A.have
B.have been
C.has been
D.has