An occulting light is one in which（）.<br>A:the period of darkness exceeds the period of light<br>B:there is only a partial eclipse of the light<br>C:the periods of light and darkness are equal<br>D:the period of light exceeds the period of darkness

An occulting light is one in which（）.
A:the period of darkness exceeds the period of light
B:there is only a partial eclipse of the light
C:the periods of light and darkness are equal
D:the period of light exceeds the period of darkness

出自：海船船员证

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