單項(xiàng)選擇題
A.1% B.2% C.3%
A.高爐煤氣 B.焦?fàn)t煤氣 C.混合煤氣
A.CaO/SiO2 B.(CaO+MgO)/SiO2 C.(CaO+MgO)/(SiO2+Al2O3)
A.10% B.5% C.7%
A.75% B.80% C.85% D.90%
A.5 B.3 C.7
A.50% B.20% C.100% D.90%
A.10℃ B.30℃ C.55℃ D.100℃
A.固定碳含量高 B.硫的含量高
A.重選 B.磁選 C.浮選
A.36% B.40% C.45% D.49%