A.small circle
B.great circle
C.rhumb line
D.hyperbola
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A.untrue
B.impossible
C.suspectful
D.unimportant
A.date of construction or establishment
B.length of time between flashes of the light
C.time required for the longest flash of each cycle
D.time required for the light to complete each cycle
A.under existing visibility conditions
B.under perfect visibility
C.with ten miles visibility
D.with fifteen miles visibility
A.nominal range
B.luminous range
C.charted range
D.geographic range
A.glare from background lighting
B.existing visibility conditions
C.elevation of the light
D.observer's height of eye
最新試題
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
Restricted areas at locks and dams are indicated by（）.
What area of the earth cannot be shown on a standard Mercator chart（）.
Which position includes the effects of wind and current（）.
The equator is（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
（） is not likely to be a methods of Traffic Separation.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
When navigating a vessel，you（）.