A.subject for
B.liable to
C.easy to meet
D.always encounter
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A.NBDP/VHF radio
B.Inmarsat safetyNet/NAVTEX
C.Safety service / Inmarsat-A
D.Long range / short range
A.FEC and ARQ
B.satellite and terrestrial communications
C.radio and telex
D.NBDP
A.by day or at night
B.almost round the clock
C.somewhat and sometime
D.from sunrise to sunset
A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be interrogated by X-band radar
A.sight or sound
B.seeing or sounding
C.visual or audible
D.seeing or hearing
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At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
Before GMDSS, if the radio officer on board is serious ill,（）.
What following is not among the function of SOLAS ships?（）
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
SOLAS ships shall be equipped with（）.
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.
By using（）system a ship can send a distress message and know with certainty it will be received.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
All coast radio stations（）DSC installed for VHF and HF.
（）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.