A.銅電解提取; B.電解鋁; C.電鍍; D.鋅電解提取
A.鋁、鎂、稀土元素的提取 B.燒堿的制取 C.電石的生產(chǎn) D.氯氣的制取
A.4.0%,3.2%,1.6% B.5.0%,4.0%,2.0% C.3.0%,2.4%,1.2% D.2.0%,1.6%,0.8%