单选题A3海区船舶的双配套设备是指（）A所有设备x2B增加一套VHFDSC设备C增加一套VHFDSC和增加一套MF/HFDSC设备或INMARSAT船站D上述均可
单选题
A3海区船舶的双配套设备是指（）
A
所有设备x2
B
增加一套VHFDSC设备
C
增加一套VHFDSC和增加一套MF/HFDSC设备或INMARSAT船站
D
上述均可
参考解析
解析：
暂无解析
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