When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）. -题库考试答案搜索网

When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）.

单选题

2022-01-04 08:01

A、10 minutes
B、1 minute
C、1 hour
D、3 minute

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正确答案

B

试题解析

标签：遇险通信

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