单选题What is the fundamental purpose for imposing radio silence? （）ATo ensure that interference to proprietary communications is minimizedBTo ensure that only voice communications can be effected on the distress frequency or channelCTo ensure that a distressed vessel will have a window twice each hour for transmitting routine messagesDTo ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized
单选题
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
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