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单选题
Which statement about transmitting distress messages by radiotelephone is INCORRECT?（）
A
Distress messages should first be transmitted on 2182 kHz
B
It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration
C
If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
D
Channel 16 (156.8 MHz) may be used for distress messages
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更多 “单选题Which statement about transmitting distress messages by radiotelephone is INCORRECT?（）A Distress messages should first be transmitted on 2182 kHzB It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds durationC If no answer is received on the designated distress frequencies，repeat the distress call on any frequency availableD Channel 16 (156.8 MHz) may be used for distress messages” 相关考题
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Two three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting window for distressed vessels to transmit distress alerts using J3ED
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Report the problem to the head electrician
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