On navigational aids，what does the light characteristic Fl(2+1) mean?（） -题库考试答案搜索网

On navigational aids，what does the light characteristic Fl(2+1) mean?（）

单选题

2022-01-18 17:23

A、A flashing light combined with a fixed light of greater brightness
B、Light flashes combined in groups，with a different number of flashes in each group
C、A light showing groups of two or more flashes at regular intervals
D、A fixed light varied at regular intervals by groups of two or more flashes of greater brightne

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正确答案

B

试题解析

标签：甲板与船体保养

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