为防止水口结瘤，可以用（）。
A．石英质水口
B．Mg质水口
C．提高钢液氧活度的方法
参考答案：A
He was surprised to know that his neighbor had _____ him of playing the piano too loudly at night. [ ]
A. reminded
B. accused
C. charged
D. realized
下列对酸轧活套叙述正确的是（）
A.入口活套有4层
B.出口活套有2层
C.联机活套有3层
D.出口活套位于入口活套和联机活套的中间
