單項選擇題
A.1:0.25:0.4:0.3 B.1:0.2:0.4:0.3 C.1:0.25:0.35:0.3 D.1:0.25:0.3:0.25
A.0.2 B.0.3 C.0.4 D.0.5
A.斜輪分選機 B.斜輪分選機 C.重介旋流器 D.跳汰分選機
A.15 B.20 C.25 D.30
A.40~50% B.35~40% C.35~45% D.35~50%
A.10~15 B.15~20 C.20~25 D.10~25
A.5 B.8 C.10 D.15
A.0.8~1.0 B.1.0~1.2 C.1.0~1.5 D.1.0~2.0
A.0.8~1.0 B.1 C.1.0~1.2 D.1.2