A.relative bearing
B.range line
C.track line
D.estimated position
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A.painted color
B.light color and phase characteristic
C.type of structure
D.All of the above
A.fixed red light
B.Morse (A) white light
C.composite group-flashing light
D.yellow light
A.flashing
B.pulsating
C.occulting
D.alternating
A.switching
B.alternating
C.oscillating
D.fluctuating
A.sharp turn in the channel
B.narrowing in the channel at that point
C.junction in the channel
D.obstruction that must be left to port
最新試題
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（）.
How is the intensity of a light expressed in the Light Lists?（）.
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
A relative bearing is always measured from（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
A preferred-channel buoy will show 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 white buoy with a blue band is（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.