A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Square
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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
A.an isolated danger mark
B.a hydrographic data collection buoy
C.a mooring buoy
D.marking a restricted area
最新試題
A yellow buoy may exhibit a(n)（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
A mid-channel buoy，if lighted，will show a（）.
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
How is the intensity of a light expressed in the Light Lists?（）.
A relative bearing is always measured from（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A white buoy with a blue band is（）.
A nun buoy will（）.