A.black
B.yellow
C.green
D.red
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A.A safe-water buoy will display red and white vertical stripes of reflective material
B.All reflective material is white because it is the most visible at night
C.A special-purpose mark will display either red or green reflective material to agree with its shape
D.A preferred-channel buoy displays either red or green reflective material to agree with the top band of color
A.a hard sand shoal marked with a light
B.completely submerged at all stages of the tide
C.surrounded by rocks awash at low water spring tides
D.a small，low，sandy islet surrounded by shoal water
A.directions
B.distances
C.locations
D.All of the above
A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Rectangle
A.Open-faced diamond
B.Diamond with a cross
C.Circle
D.Square
最新試題
A yellow buoy may exhibit a(n)（）.
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
How is the intensity of a light expressed in the Light Lists?（）.
Buoys which mark isolated dangers are painted with alternating（）.
An orange and white buoy with a rectangle on it displays（）.
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
How would you pass a red buoy in the maritime buoyage system “A”? （）