生活中废弃的铁锅、铝质易拉罐、铜线等可以归为一类加以回收，它们属于 请选择DCBA5n;q4c'V7t4y2r3S6d)Z*m2q+z(d
A．化合物'V7t4y2r3S6d)Z*m2q+z(d
B．金属或合金'V7t4y2r3S6d)Z*m2q+z(d
C．氧化物'V7t4y2r3S6d)Z*m2q+z(d
D．纯净物'V7t4y2r3S6d)Z*m2q+z(d