A.16.80%B.20.30%C.83.20%D.79.70%
A.造渣物質(zhì)B.粘結(jié)物質(zhì)C.輔助物料D.添加劑
A.重介質(zhì)選礦、機械選礦B.重介質(zhì)選礦、浮力選礦C.機械選礦、重力選礦D.重力選礦、浮力選礦