单项选择题
The COSPAS-SARSAT 406MHZ system was adopted as an element of the GMDSS by IMO in（）.
A.1992
B.1980
C.1984
D.1988
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相关考题
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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.
A.free reception
B.free transmission
C.dedicated reception
D.dedicated transmission -
单项选择题
（）can receive MSI sent by coast station.
A.A NAVTEX receiver
B.An EGC receiver
C.MF/HF radio telephone
D.HF radio telephone with NBDP
