电炉法是生产铁合金的主要方法，电炉法主要分为（）和（）两种。
参考答案：矿热；精炼炉法
On March 23, many people took part in “_________ Lights” activity to help save energy.
A．Turn off
B．Show off
C．Take off
D．Put off
跟腱扭伤的推拿治则是（）
A.温阳散寒
B.活血化瘀
C.理筋通络
D.滑利关节
E.复位固定
