单项选择题
A.NAVTEX, COSPAS/SARSAT, EPIRBs and Status Recording-system B.Inmarsat,COSPAS/SARSAT, EPIRBs and Status Recording-system C.NAVTEX, Inmarast,EPIRBs and SART D.Inmarsat, direct Printing Telegraphy
The terrestrial system of GMDSS consists of（）.A.radio-t...
单项选择题The terrestrial system of GMDSS consists of（）.
A.radio-telephony, DSC, Direct Printing Telegraphy,Navtex and SART B.INMARSAT, DSC, Direct Printing Telegraphy, Navtex and SART C.radio-telephony,DSC,EPLRB,Navtex and SART D.Status Recording system,DSC,Direct Printing Telegraphy, Navtex and SART
An（）indicates that there is imminent risk for navigatio...
单项选择题An（）indicates that there is imminent risk for navigation.
A.distress alert B.urgency message C.safety message D.routine message
A(n)（）indicates that there is serious danger for vessel...
单项选择题A(n)（）indicates that there is serious danger for vessel, crew and passenger.
