A.numbered
B.lettered
C.green
D.red
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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
A.wingdam
B.towhead
C.cutoff
D.landwall
A.true north
B.magnetic north
C.the vessel's beam
D.the vessel's head
最新試題
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
A spherical buoy may be（）.
Buoys which mark dredging areas are painted（）.
A preferred-channel buoy will show a（）.
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
An orange and white buoy marking a danger area will have what symbol on it?（）
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
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（）.