船长等各级别船员该如何保持适任证书的再有效？(海员常识百问百答56)
https://onvideo.ssrcdn.com/bs2/onVideo/skyfall/media/34252207226469325087800.mp4 腾讯https://v.qq.com/x/page/k3510l616d9.html
公众号
https://mp.weixin.qq.com/s/3-qwy5gcVWGX3j09cryyfA
今日头条
https://www.ixigua.com/i7224051689924329995/
百家号
https://haokan.baidu.com/v?vid=11030601766089058256
美篇
https://www.jianpian.cn/a/g2ihinx
一点号
https://www.yidianzixun.com/article/V_1dgP99OC
优酷
https://v.youku.com/v_show/id_XNTk1OTIzNTA0OA==.html
56视频
http://www.56.com/u46/v_MTgzMjg1NjQz.html
哔哩哔哩
https://www.bilibili.com/video/BV1Jg4y1M7Sp/
搜狐
未通过审核
爱奇艺
https://www.iqiyi.com/v_1wb6flhr2sc.html
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