What is the fundamental purpose for imposing radio silence? ()

A . To ensure that interference to proprietary communications is minimized B . To ensure that only voice communications can be effected on the distress frequency or channel C . To ensure that a distressed vessel will have a "window" twice each hour for transmitting routine messages D . To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized

时间:2022-10-06 21:45:56 所属题库:遇险通信题库

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