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
A、free reception
B、free transmission
C、dedicated reception
D、dedicated transmission
A、A.gift certificates B、B.marketing campaigns C、C.merchandising associations D、D.loyalty programs
A、NBDP/VHF radio B、Inmarsat safetyNet/NAVTEX C、Safety service / Inmarsat-A D、Long range / short range