A、the gun is being used to sound passing signals
B、the vessel is in distress
C、all vessels are to clear the area
D、all is clear and it is safe to pa
A、the gun is being used to sound passing signals
B、the vessel is in distress
C、all vessels are to clear the area
D、all is clear and it is safe to pa
时间:2022-03-15 16:00 关键词: 遇险用语
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