Geographic range is the maximum distance at which a light may be seen under（）. -题库考试答案搜索网

Geographic range is the maximum distance at which a light may be seen under（）.

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2022-01-03 16:25

A、existing visibility conditions，limited only by the curvature of the Earth
B、perfect visibility conditions，limited only by the curvature of the Earth
C、existing visibility conditions，limited only by the intensity of the light
D、perfect visibility conditions，limited only by interference from background lighting

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