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 V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
Branford reef is（）.
A relative bearing is always measured from（）.
A special purpose buoy shall be（）.
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
A preferred-channel buoy will show a（）.
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
How is the intensity of a light expressed in the Light Lists?（）.
A preferred-channel buoy may be（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）