A.stop down
B.speed down
C.slow down
D.down slow
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A.SOS，ZZZ，XXX
B.SOS，UUU，SSS
C.SOS，XXX，TTT
D.SOS，TTT，UUU
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
A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations
A.shall
B.should
C.may
D.would
A.of
B.to
C.on
D.with
最新試題
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
Which mooring line has the least elasticity?（）
Which term describes a part of a natural fiber line?（）
Which method is used to detect rot in manila lines?（）
The ship is now down（）head.
The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.
Which statement is TRUE about nylon line?（）
Keep clear（）the buoy.
The winch at Hatch No.3 is（）trouble.