皮皮学，免费搜题
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【多选题】
使用药物的化学结构修饰方法的目的是A.
降低药物的成本
B.
降低药物的毒副作用
C.
使药物在特定部位作用
D.
改善药物的溶解性
E.
提高药物的稳定性
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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A.
teachers
B.
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C.
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