A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be interrogated by X-band radar
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A.sight or sound
B.seeing or sounding
C.visual or audible
D.seeing or hearing
A.when two stations communicate with each other
B.in any radio system and at any time
C.when one ship sends a message to another station
D.for communication among some stations
A.SART
B.DSC
C.NBDP
D.RT
A.keep silence
B.interfere with such communication
C.establish communication as directed and render such assistance as is required and appropriate
D.refuse communication as directed and render such assistance as is required and appropriate
A.any appropriate channel except public communication
B.any appropriate channel except for public communications
C.any appropriate channel besides public communication
D.any appropriate channel beside public communication
最新試題
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
What following is not among the function of SOLAS ships?（）
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
SOLAS ships shall be equipped with（）.
The priority of EGC messages is classified by（）.
On-scene communications will normally take place between（）.
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（）.
Ship-to-ship distress alerting should be conducted by（）.
All coast radio stations（）DSC installed for VHF and HF.