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
A spherical buoy may be（）.
Except for N-S courses，and E-W courses on the equator，a great circle track between two points，when compared to a rhumb line track between the same two points，will（）.
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 rock and sand structure extending from the bank of the river toward the channel is known as a（）.
How is the intensity of a light expressed in the Light Lists?（）.
A preferred-channel buoy may be（）.
A parallel of latitude other than the equator is a（）.
A special purpose buoy shall be（）.
A white buoy with an orange rectangle on it displays（）.