A.Flashing
B.Morse A
C.Equal interval
D.Occulting
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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
A.white light whose characteristic is Morse (A)
B.group-occulting white light
C.composite group-flashing (2 + 1) white light
D.composite group-flashing (2 + 1) red or green light
A.lettered
B.spherical
C.showing a white light
D.All of the above
最新試題
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
A yellow buoy may mark a(n)（）.
A preferred-channel buoy may be（）.
Buoys which mark isolated dangers are painted with alternating（）.
A parallel of latitude other than the equator is a（）.
A mid-channel buoy，if lighted，will show a（）.
Branford reef is（）.
A white buoy with an orange rectangle on it displays（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
A spherical buoy may be（）.