What is defined as an area, excluding sea area A1, within the radiotelephone coverage area of at least one MF coast station,in which continuous DSC alerting is available as defined by the IMO?
发布于 2021-04-18 17:39:47
【单选题】 A Sea area A4. B Sea area A1. C Sea area A2. D Ocean area regions AOR-E, AOR-W, POR or IOR.
