A 200-meter vessel restricted in her ability to maneuver,at anchor,will sound a fog signal of().

A . a 5 second ringing of a bell forward and a 5 second sounding of a gong aft at intervals of 1 minute B . one prolonged followed by two short blasts every 2 minutes C . one prolonged followed by three short blasts every minute D . one prolonged followed by three short blasts every 2 minute

时间:2022-10-30 10:38:54 所属题库:号灯与号型题库

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