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问题的提出核工业铀矿地质系统工人中级技术培训,从1986年初开始进行,据“七五”前三年的统计,中级工培训的合格率为15％。为什么地质系统中级工
Issues raised Intermediate industrial training for nuclear industrial uranium geology workers began in early 1986. According to the statistics of the first three years of the Seventh Five-Year Plan, the passing rate of mid-level workers training was 15%. Why geological system mid-level workers