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A message by flashing light consists of the call，the identity，the ending，and the（）.
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A message by flashing light consists of the call，the identity，the ending，and the（）.
A、reply
B、text
C、time
D、answer
时间：2022-01-08 11:17
关键词：
海上通信基本知识
答案解析
B
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