The complying vessels can transmit ship-to-shore distress alerts by at least().

A . one means, whether satellite or terrestrial techniques B . two means, whether satellite or terrestrial techniques C . two separate and independent means, each using different radio communication services D . two means, such as MF DSC and HF DSC

时间:2022-11-03 13:04:24 所属题库:GMDSS题库

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