题目内容

关于山楂炮制后的现代研究,叙述不正确的是( )

A. 焦山楂黄酮类成分只保留了25.8%
B. 焦山楂总有机酸只保留32.8%
C. 炒山楂有机酸含量稍有降低
D. 炒山楂黄酮类成分明显降低
E. 山楂中总黄酮和总有机酸都集中在果肉中

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更多问题

下列基质中,不能作栓剂基质的是 ( )

A. 甘油明胶
B. 聚乙二醇
C. 凡士林
D. 可可豆酯
E. 半合成棕桐油酯

Nowhere ______ so many people planting trees.

A. have we seen
B. we have seen
C. have seen we
D. we saw

我患有漫游癖,只有在闲逛旅游时,我才感到愉快。

A. 是
B. 否

Scientists ______that bacteria through microscopes for many years.

A. studied
B. have studied
C. had studied
D. have seen studied

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