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
A.4.80%B.5.00%C.6.20%D.4.00%
A.平鋪混勻B.錐堆混勻C.滾動混勻D.二分器混勻