影响局麻药起效时间的主要因素（）
A.局麻药浓度
B.离解常数
C.神经轴的粗细
D.周围的组织结构
E.体重
参考答案：A, B, C, D
He asked me ________ with me.
A．what is the trouble
B．what wrong was
C．what was the matter
D．what trouble it is
下列哪种中毒不会引起中毒性溶血()
A．砷化氢
B．苯胺
C．硝基苯
D．亚硝酸盐
E．毒蕈
