The four standard light colors used for lighted aids to navigation are red，green，white，and （）. -题库考试答案搜索网

The four standard light colors used for lighted aids to navigation are red，green，white，and （）.

单选题

2022-01-17 15:06

A、purple
B、orange
C、blue
D、yellow

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正确答案

D

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标签：地文航海

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