英版海图(额定光力射程)上某灯塔的灯质为 FL(2)6S81m22M ,测者眼 9 米。则能见度为 12 海里时,该灯塔灯光的最大可见距离为: n mile
A.
大于等于22 n mile
B.
小于22 n mile
C.
大于25.1
D.
小于等于25.1 n mile
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