A.consists of
B.is consisted of
C.consisted of
D.are consisted of
您可能感興趣的試卷
你可能感興趣的試題
A.urgent traffic
B.distress alert
C.routine traffic
D.NAVTEX message
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.NAVTEX
B.EGC
C.HF-telex
D.all of above
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.business opportunity
B.good-quality radio telephone conversations
C.telex service
D.both B and C
最新試題
The advantage of geostationary satellites is（）.
COSPAS-SARSAT is intended to be used for（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
The priority of EGC messages is classified by（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
Radio beacon can be activated（）in case of distress.
Ship-to-ship distress alerting should be conducted by（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.