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
更多“The satellite system of GAMDSS comprise（）.”相关的问题
A、While a fix can be generated by signals received from two satellites，three satellites are necessary for reliable accuracy B、The satellites are in equatorial orbits around the earth about 60°of longitude apart C、The satellite navigation system determines a fix by measuring the doppler shift of the radio signals from the satellite D、The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking
A、communications in the whole system will stop B、the global system will be damaged C、the back-up one will take its place D、the whole system will not work
A、Space segment, NCC, RCC, SES and CES B、Space Segment, a satellite system, C system, NCC and NCS C、Space Segment, NCC, NCS,CES and SES D、A system, C system, satellite system, earth stations and NCS
A、A.Space Segment, NCC, RCC, SES, and CES B、B.Space Segment, a satellite system, C system, NCC and NCS C、C.Space Segment, NCC, NCS, CES and SES D、D.A system, C system, satellite system, earth stations and NCS
A、can be overcome by using traditional techniques B、cannot be overcome by satellite system C、can be overcome by satellite and digital techniques D、cannot be tackled by any modern system
A、can be overcome by using traditional techniques B、can not be overcome by satellite system C、can be overcome by satellite and digital techniques D、can not be tackled by any modern system
A、satellite and terrestrial communication systems B、only navigational and alerting systems C、just MSI system and locating system D、SAR co-ordination system
A、taking the place of the radio system B、introducing a new life-saving system C、saving the vessels in distress D、improving the communication on land
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