The ship will be（）demurrage soon.

单项选择题The ship is now down（）head.

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

单项选择题The ship is not very stable，please（）when making a turn.

A.stop down
B.speed down
C.slow down
D.down slow

单项选择题The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.

A.SOS，ZZZ，XXX
B.SOS，UUU，SSS
C.SOS，XXX，TTT
D.SOS，TTT，UUU

单项选择题The most likely time for oil pollution while bunkering is when（）.

A.final topping off is occurring
B.first starting to receive fuel
C.hoses are being blown down
D.hoses are disconnected and being capped

单项选择题Smoking in bed on a ship is prohibited（）.

A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations