GMDSS的主要功能是 ______A．常规通信B．播发海上安全信息C．现场通信D．遇险船舶的可靠报警
GMDSS的主要功能是 ______
A．常规通信
B．播发海上安全信息
C．现场通信
D．遇险船舶的可靠报警
参考答案和解析
船位报告
相关考题：
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