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单选题
When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? ()
A

After determining that the frequency or channel appears to be no longer in use

B

After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications

C

After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded

D

Routine communications can resume if,in the Master's opinion,communications on that frequency or channel will not interfere with emergency communications


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