单选题船舶招引注意信号”通常有（）。 ①灯光信号； ②声响信号A①B②C①②都对D①②都不对
单选题
船舶招引注意信号”通常有（）。 ①灯光信号； ②声响信号
A
①
B
②
C
①②都对
D
①②都不对
参考解析
解析：
暂无解析
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