A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Rectangle
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A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Square
A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Square
A.wreck
B.shoal area
C.anchorage area
D.middle ground
A.fixed red light
B.flashing light
C.white light
D.occulting light
A.directions
B.dangers
C.exclusion areas
D.All of the above
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A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
A yellow buoy may exhibit a(n)（）.
Buoys which mark dredging areas are painted（）.
A preferred-channel buoy will show a（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
A preferred-channel buoy may be（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
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 white buoy with an open-faced orange diamond on it indicates（）.
A yellow buoy may mark a(n)（）.