A.fixed red light
B.Morse (A) white light
C.green light
D.flashing red light
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A.gnomonic curve
B.small circle
C.meridian
D.great circle
A.relative bearing
B.range line
C.track line
D.estimated position
A.painted color
B.light color and phase characteristic
C.type of structure
D.All of the above
A.fixed red light
B.Morse (A) white light
C.composite group-flashing light
D.yellow light
A.flashing
B.pulsating
C.occulting
D.alternating
A.switching
B.alternating
C.oscillating
D.fluctuating
A.sharp turn in the channel
B.narrowing in the channel at that point
C.junction in the channel
D.obstruction that must be left to port
A.should be passed close aboard on either side
B.indicates that special caution is required
C.is used at a channel bifurcation or junction
D.is painted with red and white vertical stripes
A.easterly courses in high latitudes
B.southerly courses in high latitudes
C.westerly courses in low latitudes
D.easterly courses in low latitudes that cross the equator
A.plane tangent at one point
B.cylinder tangent at the equator
C.cone tangent at one parallel
D.infinite series of cones tangent at selected parallels
最新试题
A parallel of latitude other than the equator is a（）.
A preferred-channel buoy will show a（）.
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
An orange and white buoy marking a danger area will have what symbol on it?（）
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
How is the intensity of a light expressed in the Light Lists?（）.
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
A white buoy with an open-faced orange diamond on it indicates（）.
A vessel is（）when she is not at anchor，made fast to the shore，or aground.