SafetyNet is a maritime safety information broadcast service offering（）on suitably equipped ships.<br>A:free reception<br>B:free transmission<br>C:dedicated reception<br>D:dedicated transmission

SafetyNet is a maritime safety information broadcast service offering（）on suitably equipped ships.
A:free reception
B:free transmission
C:dedicated reception
D:dedicated transmission

出自：海船船员证

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