A.fixed red light
B.Morse (A) white light
C.composite group-flashing light
D.yellow light
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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
最新試題
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
A white buoy with a blue band is（）.
A yellow buoy may exhibit a(n)（）.
A nun buoy will（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
A white buoy with an open-faced orange diamond on it indicates（）.
Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
A preferred-channel buoy may be（）.
A preferred-channel buoy will show a（）.
A parallel of latitude other than the equator is a（）.