智慧职教: How are paired NBDP frequencies normally used?
举一反三
- 13. How are paired NBDP frequencies normally used? . A: These are normally used for FEC conunurucations with coast radio stations. B: These are normally used for ARQ communications with coast radio stations. C: These are normally used only for distress communications to limit channel interference. D: These are normally used for DSC communications with coast radio stations.
- Memos are normally used for sensitive communication.
- 智慧职教: 使用NBDP通信时, 应将发射机置于_______ 工作方式
- 智慧职教: Which of the following HF frequencies is internationally allocated for use for transmitting NAVTEX type broadcasts?
- “ 草芥 ” is normally used as a metaphor for something that is worth mentioning.