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我所于1993年至1995年对市内管辖的61家企业进行了劳动卫生调查,现将调查结果分析如下:1.基本情况:秦皇岛有市属以上企业中有73家存
From 1993 to 1995, I surveyed 61 enterprises under the jurisdiction of the city for labor hygiene. The results of the survey are as follows: 1. Basic Information: 73 of the enterprises above designated cities in Qinhuangdao