單項選擇題

The satellite system of GAMDSS comprise（）.

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

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單項選擇題

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

單項選擇題

An（）indicates that there is imminent risk for navigation.

A.distress alert
B.urgency message
C.safety message
D.routine message

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The satellite system of GAMDSS comprise（）.

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The terrestrial system of GMDSS consists of（）.

An（）indicates that there is imminent risk for navigation.