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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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更多 “ 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 useB.After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communicationsC.After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concludedD.Routine communications can resume if，in the Master's opinion，communications on that frequency or channel will not interfere with emergency communications ” 相关考题
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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 useB
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communicationsC
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concludedD
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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单选题When can routine communications be resumed when radio silence has been imposed?（）A
After determining that the frequency or channel appears to be no longer in useB
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communicationsC
Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concludedD
If，in the Master's opinion，communications on that frequency will interfere with emergency communications
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单选题What is the fundamental purpose for imposing radio silence? （）A
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Both of the aboveD
None of the above
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单选题Which statement is TRUE（）.A
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Both of the aboveD
None of the above
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单选题How is “radio silence” imposed?（）A
By the On Scene Coordinator (OSC)B
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单选题What is meant by the term “radio silence”?（）A
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magnetronB
receiverC
indicatorD
modulator
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