單項選擇題In order to ensure that a RACON signal is displayed on the radar，you should（）.

A.increase the brilliance of the PPI scope
B.turn off the interference controls on the radar
C.use the maximum available range setting
D.increase the radar signal output


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1.單項選擇題In a crossing situation，the stand-on vessel should normally（）.

A.take action to cross ahead of the other vessel
B.take action to pass astern of the other vessel
C.maintain course and speed
D.change course and increase speed

2.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

3.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

4.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

5.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