矩形双曲线反映了受体－配体结合的哪一种特性（）
A.高度亲和力
B.高度专一性
C.可饱和性
D.可逆性
E.特定的作用模式
参考答案：C
Why is Venice san sinking
A．Because people only stop using underground water for industries on the mainland.
B．Because people still make use of the underground water for all purposes.
C．Because the use of groundwater far industries on the mainland has been stopped.
D．Because people do not use the underground water any more.
下列哪种中成药剂型在贮存中易发生沉淀
A．酊剂
B．口服液
C．片剂
D．散剂
E．水剂
