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
最新試題
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
Branford reef is（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
A relative bearing is always measured from（）.