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【多选题】
关于渗透泵型控释制剂，错误的叙述是
A.
渗透泵片剂以零级速度释药，为控释制剂
B.
渗透泵型片剂与包衣片很相似，只是在包衣片剂的一端用激光开一细孔，药物由细孔流出
C.
渗透泵片剂的片芯吸水速度决定于膜的渗透性能和片芯的渗透压
D.
渗透泵片剂的释药速率与pH有关，在胃肠中的释药速率相等
E.
半渗透膜的厚度、渗透性、片芯处方及释药的大小是制备渗透泵片剂的关键
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