class radio electronic certificate 一等无线电子员证书 first-class radio electronic certificate 一等无线电子员证书 ; 一级无线电电子证书 second-class radio electronic certificate 二级无线电电子证书 ..
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...四种使用 GMDSS 频率及技术的通信设备的无 线电人员证书: 1 、一级无线电电子证书 (First-Class Radio Electronic Certificate); 2 、二级无线电电子证书 (Second-Class Radio Electronic Certificate); 3、通用操作员证书(General Operator's Certificate...
基于12个网页-相关网页
first class radio electronic certificate 一等无线电子员证书
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