问题详情

The operator of the ship’s radiotelephone,if the radiotelephone is carried voluntarily,must hold at least a().


A、Mate's license

B、Restricted radiotelephone operator permit

C、Second-class radio operator's license

D、Seaman's document

时间:2022-01-03 23:45 关键词: GPS、DF及LC的使用

答案解析

B
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