题目内容

药物易发生水解变质的结构是

A. 烃基
B. 苯环
C. 内酯
D. 羧基
E. 酚羟基

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在苯酚环上引入供电子基（如氨基、羟基、烷氧基、烷基）时

A. 自动氧化减慢
B. 自动氧化不变
C. 自动氧化加快
D. 自动氧化先慢后快
E. 自动氧化先快后慢

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The world famous enterprise __________________________ business relations with our company in 2018.

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