智慧职教: VHF DSC transmissions are encoded and transmitted in what emission mode?
举一反三
- 智慧职教: 应 对VHF DSC和MF/HF DSC设备进行自检， 要试验两部VHF DSC对叫。
- 智慧职教: Ships in areas A3 and A4 will transmit, as appropriate_____ ①a ship-to-shore alert by MES or HF DSC ②a ship to- shore alert by satllite EPIRB③a ship-to-ship alert on MF/VHF DSC
- 船对船报警应该使用（）。 A: Inmarsat-F船站 B: VHF DSC和MF DSC C: SART及VHF DSC D: 卫星EPIRB和VHF EPIRB
- 船至船遇险报警应该使用( )。 A: Inmarsat-F或Inmarsat-C船站 B: VHF DSC和MF DSC C: SART 及VHF DSC D: 卫星 EPIRB和 VHF EPIRB
- In accordance with the operational control mode, car transmissions can be divided into manual transmission (MT) and automatic transmission (AT).