下列哪项不是利除痰法常用的药物（）
A.胆南星
B.法半夏
C.橘皮
D.吴茱萸
E.白芥子
参考答案：D
___ three times in a row, the boxer decided to make a fourth attempt, though．
A．Having defeated
B．To have defeated
C．Having been defeated
D．To defeat
管路系统的特性曲线是随着（）的增加而上升。
A、流量
B、扬程
C、轴功率
D、效率
