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Auction and repeatedly issuance of line operation license are not allowed.
禁止拍卖、重复授予线路经营许可证.
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Have boiler operation license, have above three years of working experience.
有电厂中温中压锅炉操作证, 三年以上工作经验.
Among them, line route and operational expiry shall be specified in line operation license.
其中, 线路走向和经营期限应当在线路经营许可证中予以注明.
运行许可证???
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