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[JT/T 29.7-1993] 交通行业工人技术等级标准 港口 码头维修工[已作废]
发布时间：1994-04-01
实施时间：1994-04-01
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[JT/T 29.8-1993] 交通行业工人技术等级标准 港口 港口装卸工[已作废]
发布时间：1994-04-01
实施时间：1994-04-01
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[JT/T 29.9-1993] 交通行业工人技术等级标准 港口 港口理货员[已作废]
发布时间：1994-04-01
实施时间：1994-04-01
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[JT/T 29.22-1993] 交通行业工人技术等级标准 港口 港口广播员[已作废]
发布时间：1993-10-19
实施时间：1994-04-01
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