单项选择题
COSPAS-SARSAT has the function of（）.
A.distress alerting B.communication C.broadcasting MSI D.on-scene communication
单项选择题 SafetyNet is a maritime safety information broadcast service offering（）on suitably equipped ships.
单项选择题 （）can receive MSI sent by coast station.
单项选择题 Ships sailing in（）are able to receive and print out EGC messages.
