多项选择题
A.工程量200万元的非标设备安装工程B.10万~30万千瓦汽轮发电机安装工程C.生产能力80万吨的冷轧工程D.单位工程造价1200万元的通风空调工程E.空调制冷量300~800冷吨的通风空调工程
A.personal health choices help cure most illnessesB.it helps raise the level of our medical knowledgeC.it is essential to personal freedom in American societyD.wrong decisions could lead to poor health
A.层间锤击B.合理安排装配焊接顺序C.合理选择焊缝尺寸和形状D.尽可能减少焊缝数量,减小焊缝长度E.合理安排焊缝位置