A.numbered
B.lettered
C.green
D.red
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A.lighted with a white light
B.striped black and red
C.lighted with a red light
D.yellow
A.Flashing
B.Morse A
C.Equal interval
D.Occulting
A.Entrance buoy
B.New buoy
C.Port buoy
D.Cardinal buoy
A.wingdam
B.towhead
C.cutoff
D.landwall
A.true north
B.magnetic north
C.the vessel's beam
D.the vessel's head
最新試題
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
A white buoy with an orange rectangle on it displays（）.
An orange and white buoy with a rectangle on it displays（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
From your position you observe a rotating white and green light to the north. This light is most likely（）.
Branford reef is（）.
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 nun buoy will（）.
An orange and white buoy marking a danger area will have what symbol on it?（）