A.underway
B.making way
C.dead in the water
D.a power driven vessel
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A.dike
B.revetment
C.cutoff
D.crib
A.numbered
B.lettered
C.green
D.red
A.lighted with a white light
B.striped black and red
C.lighted with a red light
D.yellow
A.Flashing
B.Morse A
C.Equal interval
D.Occulting
A.Entrance buoy
B.New buoy
C.Port buoy
D.Cardinal buoy
最新試題
A white buoy with an orange rectangle on it displays（）.
A nun buoy will（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
A spherical buoy may be（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
A mid-channel buoy，if lighted，will show a（）.
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）