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 white buoy with an orange rectangle on it displays（）.
A nun buoy will（）.
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
An orange and white buoy marking a danger area will have what symbol on it?（）
How is the intensity of a light expressed in the Light Lists?（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.