正确的加料方法，是获得良好炉况、达到高（）低的（）关键环节之一。
参考答案：产量；消耗
My father _____ to America. He _____ there three months ago. [ ]
A. went; has been
B. has been; has gone
C. has gone; went
D. has went; went
急性肾功能衰竭的患者出现血钾升高＞ 5.5mmol，应用下列哪种方法降低血钾
A．大量补充平衡液
B．输入5%的葡萄糖注射液500ml
C．H受体阻断药
D．滴入25%的葡萄糖溶液200ml，加胰岛素12U
E．5%的碳酸氢钠150ml静脉注入
