A.Ship owner‟s will
B.economic condition
C.the area in which the ship operates
D.different orders of all countries
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A.Distress, Urgency and Safety
B.Vital, Important and Routine
C.NAVAREA, Coastal and local
D.gale, Tsunami and Ice
A.1,2
B.2,3
C.2,1
D.3,2
A.medical assistance
B.medical advise
C.maritime assistance
D.technical assistance
A.establish a communication channel from the CES, via the International Telex network to the final destination
B.set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C.set up a channel directly to the addressee at the destination
D.establish a channel from your terminal, via the International telex network to a CES within your ocean region
A.The SES
B.The space segment
C.Any CES
D.The CES decided by the applicant
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SOLAS ships shall be equipped with（）.
The advantage of geostationary satellites is（）.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
By using（）system a ship can send a distress message and know with certainty it will be received.
Please use（）for（）.
（）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.
The vessel has stayed in port for seven days because she needs（）.
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.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.