单项选择题
A.distress, urgent and safety B.safety and routine C.urgent, safety and routine D.distress, urgent, safety and routine
The quality of EGC messages is（）affected by the positio...
单项选择题The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
A.sometimes B.all times C.never D.partly
As each MSI message will have a unique identity, the pr...
单项选择题As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
A.automatically suppressed B.finished by the operator C.manually suppressed D.done again
SafetyNet is an international service for the broadcast...
单项选择题SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
A.DSC B.EPIRB C.EGC D.NBDP
