单项选择题
A.fixed red light B.Morse (A) white light C.green light D.flashing red light
A line on the Earth parallel to the equator is a（）.A.gn...
单项选择题A line on the Earth parallel to the equator is a（）.
A.gnomonic curve B.small circle C.meridian D.great circle
A line of position formed by sighting two charted objec...
单项选择题A line of position formed by sighting two charted objects in line is called a(n)（）.
A.relative bearing B.range line C.track line D.estimated position
A lighthouse can be identified by its（）.A.painted color...
单项选择题A lighthouse can be identified by its（）.
A.painted color B.light color and phase characteristic C.type of structure D.All of the above
