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shou qi hun ning tu jian yan yuan ding qi ban yuan man bi ye
Pages: 23
Year: Issue:  5
Journal: Ready-mixed Concrete

Abstract: <正>2009年4月30日,首期混凝土检验员毕业典礼在北京建工集团五建混凝土分公司举办,参加第一期学习班的六名学员顺利的通过了国家建材特有工种职业技能鉴定站组织的理论和
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