单项选择题
A.1000B.1100C.1200D.1300
A.10B.20C.30D.40
A.47%B.57%C.67%D.77%
A.炉气和温度分布状况B.焦炭的燃烧速度C.批料的重量D.炉料的块度
A.8.36%B.10.36%C.12.36%D.14.36%
A.10B.20C.30D.50
A.50B.100C.200D.400
A.2%B.7%C.20%D.60%
A.出铁前7~10minB.装料时加入C.出铁前3minD.出铁前20min
A.出钢前3minB.装料时加入C.出钢前10minD.出钢前20min
A.出铁前7~10minB.装料时加入C.出铁前10minD.出铁前7min