單項選擇題You may find the time of slack water after low water in a certain port from().

A.Deadweight Scale
B.Tide Tables
C.Notices to Mariners
D.Table of Azimuth


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1.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

2.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

3.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

4.單項選擇題A(n)()indicates that there is serious danger for vessel, crew and passenger.

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

5.單項選擇題A(n)()indicates that is serious and inmmediate danger for vessel, crew and passengers.

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