Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.<br>A:identification<br>B:distinction<br>C:discrimination<br>D:clearly seeing

Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.
A:identification
B:distinction
C:discrimination
D:clearly seeing

出自：海船船员证

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