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【简答题】
将药材堆积放置,使其发热回潮,使内部水分向外挥散,此法 第 37 题 将药材堆积放置,使其发热回潮,使内部水分向外挥散,此法称(  )
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举一反三
【多选题】黄酮苷类化合物常用的提取方法有
A.
碱提取酸沉淀法
B.
乙醇提取法
C.
水蒸气蒸馏法
D.
沸水提取法
E.
酸提取碱沉淀法
【单选题】In the last paragraph, the author tries to justify his conclusion by
A.
reducing to absurdity.
B.
making an comparison.
C.
giving an example.
D.
explaining a phenomenon.
【单选题】In the passage, the author tries to tell us purely entertainment programs similar to the classic 'Bewitched'______.
A.
are as good as those in the U.S.
B.
have been seen on many government-controlled networks
C.
are as gray and dismal as the uninformed might unnecessarily visualize
D.
are not as gloomy as the uninformed might unnecessarily visualize
【单选题】What conclusion can we draw from the passage?
A.
The author tries to tell the readers how important the language is.
B.
The author intends to explain the significance of culture in global communication.
C.
The author thinks his mistake is only an awkwardness in his everyday life.
D.
The author wants to illustrate what the sentence 'Don't use thanks' means.
【单选题】小明用手推小车,使车前进的力的施力物体与受力物体分别是 ( )
A.
地球和小车
B.
地面和小车
C.
小明和小车
D.
小车和小明
【简答题】黄酮类化合物常用提取方法有()法,()法。用溶剂提取法提取黄酮类化合物,若原料为叶或种子时,可用石油醚处理除去(),(),()等脂溶性杂质。也可在浓缩的提取液中加多倍量的浓醇,除去(),()等水溶性杂质。
【多选题】黄酮类化合物常用的提取方法有:()
A.
碱溶酸沉法
B.
酸溶碱沉法
C.
醇提取法
D.
金属络合物沉淀法
E.
水蒸气蒸馏法
【简答题】By asking these fundamental questions, the author tries to persuade us to change our view on ________.
【多选题】黄酮类化合物常用的提取方法为
A.
萃取法
B.
溶剂提取法
C.
酸提取碱沉淀法
D.
酸水提取法
E.
碱提取酸沉淀法
【多选题】黄酮苷类化合物常用的提取方法有
A.
碱溶解酸沉淀法
B.
乙醇提取法
C.
水蒸气蒸馏法
D.
沸水提取法
E.
酸提取碱沉淀法
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