单选题（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.ASafetyNETBNAVTEXCNAVAREADVHF R/T
单选题
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
A
SafetyNET
B
NAVTEX
C
NAVAREA
D
VHF R/T
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