2018 National Question 1 Single-choice Differentiating 2018_新课标I Paper 1.将生产精密机械设备的工厂建在地下有利于( )①保持恒温环境②储存原材料和产品③降低生产成本④减小地面振动影响 A. ①③B. ②③C. ①④D. ②④ Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →