A.removed
B.altered
C.corrected
D.converted
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A.always be nearer to the equator
B.always be nearer to the elevated pole
C.be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere
D.be nearer to the pole or the equator depending on the latitudes of the arrival and departure positions
A.Flashing
B.Quick flashing
C.Composite group flashing
D.Equal interval (isophase)
A.red and black bands
B.green and black bands
C.red and white stripes
D.green and white bands
A.black
B.yellow
C.green
D.red
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
最新試題
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? ()
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a().
A relative bearing is always measured from().
A parallel of latitude other than the equator is a().
A white buoy with an orange rectangle on it displays().
A rock and sand structure extending from the bank of the river toward the channel is known as a().
A preferred-channel buoy may be().
A preferred-channel buoy will show a().
Buoys which mark isolated dangers are painted with alternating().
A plane that cuts the Earth’s surface at any angle and passes through the center will always form().