A.Search and rescue authorities ashore can be alerted to a distress situation
B.Shipping in the immediate vicinity of a ship in distress will be rapidly alerted
C.Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delay
D.All of the above
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A.No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequency
B.The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received
C.The Operator should immediately set continuous watch on VHF channel 70
D.The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
A.A compulsory vessel must carry at least two (2) licensed GMDSS operators
B.A compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails
C.A compulsory vessel must be able to transmit and respond to distress alerts
D.All of the above
A.A compulsory vessel must carry at least two licensed GMDSS Radio Operators
B.A compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails
C.A compulsory vessel must be able to transmit and respond to distress alerts
D.All of the above
A.It will abort the transmission and set off an audible alarm that must be manually reset
B.It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situation
C.It will initiate the DSC distress alert and default information will automatically be transmitted
D.It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situation
A.Emergency Position Indicating Radar Buoy
B.Electronic Pulse Indicating Radiobeacon
C.Emergency Position Indicating Radiobeacon
D.None of the above
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The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
COSPAS-SARSAT is intended to be used for（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
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.
The vessel has stayed in port for seven days because she needs（）.
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.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
All coast radio stations（）DSC installed for VHF and HF.
The rescue coordination center may（）on stations which interfere with traffic.