If a ship is fitted with a VHF radio installation, while at sea, shall______._
发布于 2021-02-03 13:09:03
【单选题】 A maintain a watch on MF 2182kHz B maintain a continuous watch on VHF Channel 70 and Channel 16 C maintain a continuous watch on MF 2174.5kHz D maintain a continuous watch on VHF Channel 06
