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
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A.lettered
B.spherical
C.showing a white light
D.All of the above
A.the equator
B.a great circle
C.a small circle
D.a meridian
A.the equator
B.a loxodromic curve
C.a small circle
D.a meridian
A.Great circle
B.Equator
C.Small circle
D.Meridian
A.great circle
B.loxodromic curve
C.small circle
D.gnomonic curve
最新試題
An orange and white buoy marking a danger area will have what symbol on it?（）
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
A white buoy with a blue band is（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
A nun buoy will（）.
A relative bearing is always measured from（）.
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）