单项选择题
A.对药物毒性无影响 B.降低药物毒性 C.降低药物作用 D.增加药物毒性 E.降低药物毒性
A.1/18~1/14 B.1/14~1/7 C.1/7~1/5 D.1/5~1/4 E.1/4~1/3
A.1/5~1/4 B.1/4~1/3 C.1/3~2/5 D.2/5~1/2 E.1/2~3/5