海员入门知识：海员有甲类乙类和丙类的划分吗有什么区别(总第689期)
https://onvideo.ssrcdn.com/bs2/onVideo/skyfall/media/34252205187270968542834.mp4 腾讯https://v.qq.com/x/page/p3353tz4jsf.html
公众号
https://mp.weixin.qq.com/s/pK6j9nWxNbLOhqoH_KxMlg
今日头条
https://www.ixigua.com/i7136135921144955406/
百家号
https://haokan.baidu.com/v?vid=12338077351570773034
美篇
https://www.meipian.cn/4d7e9eay?share_depth=1
一点号
https://www.yidianzixun.com/article/V_1CvRoKGM
优酷
https://v.youku.com/v_show/id_XNTg5ODg3MTgwOA==.html
56视频
http://www.56.com/u52/v_MTc5NzE0ODcz.html
哔哩哔哩
https://www.bilibili.com/video/BV1NT411c78b/
搜狐
https://tv.sohu.com/v/dXMvMzY1NjQ1Njk5LzM3ODQ2ODQzMi5zaHRtbA==.html
爱奇艺
http://www.iqiyi.com/v_20bso5nkosk.html
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