A.manually activated and operate on maritime (VHF) channels
B.automatically activated and operate on maritime (VHF) channels
C.manually operated and detected by satellite
D.automatically operated and detected by satellite
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A.self-propelled，inspected vessels
B.towing vessels
C.recreational vessels
D.uninspected passenger vessels
A.orbiting satellites in space
B.commercial radio stations
C.private，commercial，and military aircraft
D.ordinary radio stations
A.One approved Class A EPIRB
B.Two approved Class A EPIRBs
C.One approved Class B EPIRBs
D.Two approved Class B EPIRBs
A.does not have berthing facilities
B.has berthing and galley facilities
C.is a workboat and her mother ship carries an EPIRB
D.None of the above are correct
A.the information can be received on an ordinary FM radio
B.warnings are printed out for reading when convenient
C.broadcasts are at scheduled times
D.a low frequency band is used for long distance transmission
最新試題
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
On-scene communications will normally take place between（）.
All coast radio stations（）DSC installed for VHF and HF.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
（）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.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
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.