单项选择题
A.alphabetical B.figure C.name of stations D.series
When engaged on international voyages, ships of 1600 to...
单项选择题When engaged on international voyages, ships of 1600 tons gross tonnage and upwards shall be fitted with a（）.
A.radio direction-finding apparatus B.DSC C.NAVTEX D.EPIRB
The maritime access code of telephone mode in INMARSAT-...
单项选择题The maritime access code of telephone mode in INMARSAT-A terminal for the AOR(W) is（）.
A.871 B.872 C.873 D.874
In Inmarsat-A, “Priority 0” means（）communication.A.rout...
单项选择题In Inmarsat-A, “Priority 0” means（）communication.
A.routine B.distress C.urgency D.safety
