A.switching
B.alternating
C.oscillating
D.fluctuating
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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
A.True position
B.True meridian
C.True course
D.True bearing
最新試題
A parallel of latitude other than the equator is a（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
A preferred-channel buoy may be（）.
A spherical buoy may be（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
Branford reef is（）.
A special purpose buoy shall be（）.
Buoys which mark isolated dangers are painted with alternating（）.