单项选择题
A.distress B.urgent C.safety D.general
Every radio installation shall be clearly marked with t...
单项选择题Every radio installation shall be clearly marked with the（）, the ship station identity and other codes as applicable for the use of the radio installation.
A.call sign B.port of register C.radio name D.signal label
A station in the mobile service the emissions of which ...
单项选择题A station in the mobile service the emissions of which are intended to facilitate search and rescue operations is（）.
A.EPIRB B.SART C.Mobile Station D.Distress Alerting
（）process the distress signal from EPIRB to determine i...
单项选择题（）process the distress signal from EPIRB to determine its position and identity.
A.COSPAS-SARSAT B.ground receiving stations C.storing distress signal D.Near polar orbiting satellites
