A.from a submarine on the surface
B.the light at Southeast Point
C.at an airport
D.on a coastal patrol vessel
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A.removed
B.altered
C.corrected
D.converted
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
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How is the intensity of a light expressed in the Light Lists?（）.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
A spherical buoy may be（）.
A white buoy with a blue band is（）.
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
A preferred-channel buoy may be（）.
A mid-channel buoy，if lighted，will show a（）.
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
A nun buoy will（）.