单选题英版海图图式中，灯质缩写“Oc”表示（）。A明暗光B等明暗光C联闪光D混合联闪光
单选题
英版海图图式中，灯质缩写“Oc”表示（）。
A
明暗光
B
等明暗光
C
联闪光
D
混合联闪光
参考解析
解析：
暂无解析
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