海员证有效期是多久？有四小证可以做电工吗(猪班长海员热线1018期)
https://onvideo.ssrcdn.com/bs2/onVideo/skyfall/media/34252207018763952036997.mp4 腾讯https://v.qq.com/x/page/j3506idqob7.html
公众号
https://mp.weixin.qq.com/s/l5R8MYLMMuOGFJb2OvEdMg
56视频
http://www.56.com/u62/v_MTgyNzU1OTg3.html
搜狐
https://tv.sohu.com/v/dXMvMzY1NjQ1Njk5LzQzMTU2ODI0Mi5zaHRtbA==.html
百家号
https://haokan.baidu.com/v?vid=15354505058275856701
美篇
https://www.jianpian.cn/a/bq8f31w
优酷
https://v.youku.com/v_show/id_XNTk1MjA1NTIxMg==.html
爱奇艺
https://www.iqiyi.com/v_1oheom8tbb4.html
哔哩哔哩
https://www.bilibili.com/video/BV1Qc411j7A4/
今日头条
https://www.ixigua.com/i7212925950365958671/
一点号
https://www.yidianzixun.com/article/V_1dS9cLbu
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