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单选题 In contrast to inorganic compounds, the molecular attraction of organic compounds is weak, so organic compounds are usually ( ) and possess low melting points
学科：专业英语
时间：2023-10-27 14:38:38
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The problem whether natural rubber ( ) a polymer with linear chain molecules has been solvedA. hasB. haveC. isD. are
题目2单选题
A ( ) is a substance that speeds up a chemical reaction but does not enter into the reaction itselfA. compoundB. moleculeC. catalystD. functional group
题目3单选题
Alkanes undergo reactions such as cracking, alkylation, oxidation, ( ), nitration and so onA. halogenB. halogenateC. halideD. halogenation
题目4单选题
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题目5单选题
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题目6单选题
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题目7单选题
Tertiary alcohols are resistant to ( )A. oxideB. oxidationC. sulfideD. sulfate
题目8单选题
In contrast to inorganic compounds, the molecular attraction of organic compounds is weak, so organic compounds are usually ( ) and possess low melting pointsA. non-volatileB. volatileC. biodegradableD. flammable
题目9单选题
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题目10单选题
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