Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）<br>A:Distress messages should first be transmitted on 2182 kHz<br>B:Channel 16 (156.8 MHz) may be used for distress messages<br>C:If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available<br>D:It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration

Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
A:Distress messages should first be transmitted on 2182 kHz
B:Channel 16 (156.8 MHz) may be used for distress messages
C:If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
D:It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration

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