组成药物中含有牛膝的方剂是
A．芍药汤
B．龙胆泻肝汤
C．清营汤
D．导赤散
E．玉女煎
参考答案：E
－
A．Yes, go ahead. B．No, you'd better not.
C．I'm sorry, but yes. D．I'm afraid not.
图是“伏安法”测电阻时电流表和电压表的示数．图中电流表的示数是______A．这时待测电阻的阻值是______Ω．
