A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Square
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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
A.danger
B.vessels are excluded from the area
C.the buoy is a mooring buoy
D.operating restrictions are in effect
最新試題
A relative bearing is always measured from（）.
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A preferred-channel buoy may be（）.
A special purpose buoy shall be（）.
A white buoy with a blue band is（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
An orange and white buoy marking a danger area will have what symbol on it?（）