單項選擇題
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
A.be green in color B.have an even number C.be left to port when entering from seaward D.be cylindrical in shape
A.fixed red light B.Morse (A) white light C.green light D.flashing red light
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
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