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
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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
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
最新試題
A relative bearing is always measured from（）.
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
A nun buoy will（）.
A parallel of latitude other than the equator is a（）.
A yellow buoy may exhibit a(n)（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
How is the intensity of a light expressed in the Light Lists?（）.
An orange and white buoy with a rectangle on it displays（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）