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
A.an isolated danger mark
B.a hydrographic data collection buoy
C.a mooring buoy
D.marking a restricted area
A.submerged rock，not dangerous to navigation
B.sunken wreck，not dangerous to navigation
C.towed-under buoy
D.All of the above
A.underway
B.making way
C.dead in the water
D.a power driven vessel
A.dike
B.revetment
C.cutoff
D.crib
A.numbered
B.lettered
C.green
D.red
最新试题
A parallel of latitude other than the equator is a（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
Buoys which mark isolated dangers are painted with alternating（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
How is the intensity of a light expressed in the Light Lists?（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
How would you pass a red buoy in the maritime buoyage system “A”? （）
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A preferred-channel buoy may be（）.
A spherical buoy may be（）.