单选题

药物牙膏必须具有( )。

A不干扰氟防龋作用

B长期应用不影响或破坏口腔微生物的生态平衡

C不产生抗药性

D不使酵母菌落过度生长或外源性微生物植居于口腔内

E具有以上各个方面

正确答案

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