二零规则对操作级船员证书等级做了哪些调整？(海员常识百问百答47)
https://onvideo.ssrcdn.com/bs2/onVideo/skyfall/media/34252207176240382520275.mp4 腾讯https://v.qq.com/x/page/n3510vohyp1.html
公众号
https://mp.weixin.qq.com/s/0KzMy_kkxYFUogkqiPgiRA
今日头条
https://www.ixigua.com/i7223686305597948475/
百家号
https://haokan.baidu.com/v?vid=8711512014105975353
美篇
https://www.jianpian.cn/a/g1ffy90
一点号
https://www.yidianzixun.com/article/V_1davWBKX
优酷
https://v.youku.com/v_show/id_XNTk1NjkxMDc4OA==.html
56视频
http://www.56.com/u74/v_MTgzMjYyNDM5.html
哔哩哔哩
https://www.bilibili.com/video/BV1Cg4y1j7Wc/
搜狐
https://tv.sohu.com/v/dXMvMzY1NjQ1Njk5LzQzOTMxNjk1My5zaHRtbA==.html
爱奇艺
https://www.iqiyi.com/v_24h51uvtnf4.html
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