A.nominal range
B.luminous range
C.charted range
D.geographic range
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A.glare from background lighting
B.existing visibility conditions
C.elevation of the light
D.observer's height of eye
A.flashing red lights upstream and fixed red lights downstream
B.yellow unlighted buoys
C.signs and/or flashing red lights
D.red daymarks upstream and green daymarks downstream
A.odd or even numbers
B.the color of their top band
C.the location of the buoy in the channel junction
D.the buoy's light rhythms
A.Orange
B.White
C.Red
D.Alternating yellow and white
A.Three
B.Two
C.One
D.None
最新試題
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
You should plot your dead reckoning position（）.
Which buoy will NOT display white retro reflective material（）.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
Which of the following are data layer categories to be displayed on ECDIS（）．
Restricted areas at locks and dams are indicated by（）.
（） is not likely to be a methods of Traffic Separation.
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.
When entering a channel from seaward，the numbers on buoys（）.