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问题详情

A radio medical advice service（）ships of all nationalities and no charge is made for this service.

A、is available to

B、is available for

C、are available to

D、are available for

时间：2022-01-03 20:45 关键词：氯碱主控工水路交通运输技能考试海船船员考试

答案解析

B

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