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【单选题】
区别 n → 和 → 跃迁类型,可以用吸收峰的
A.
最大吸收波长
B.
面积
C.
吸光度
D.
摩尔吸收系数
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A.
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【简答题】Today a new generation of sociologists continues to further study the puzzle of ______.
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【单选题】According to Paragraph 2, a new study finds that______.
A.
learning a new language can benefit a lot when you grow old
B.
you have to learn a new language at a very young age
C.
picking up a new language have few benefits later in life
D.
picking up a new language can cause serious health problems
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【多选题】已知由同种元素组成的不同种单质，互称为同素异形体。例如金刚石和石墨是同素异形体，红磷和白磷也是同素异形体。某同学查阅有关资料得知：铁有δ-Fe、γ-Fe、α-Fe三种同素异形体。三种晶体在不同温度下能发生以下转化。下列有关说法正确的是 [     ]
A.
构成它们的原子大小不同
B.
δ-Fe、γ-Fe、α-Fe之间的相互转化是化学变化。
C.
δ-Fe、γ-Fe、α-Fe一定由不同种类的铁原子构成
D.
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【单选题】( ) is the study of the various aspects of the relation between language on the one hand and speakers and society on the other.
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【简答题】A new study shows a relationship between fast walking and life expectancy. For this study, researchers looked at walking speed and other health factors for almost 35,000 older s. They followed th...
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【单选题】在财产清查中发现库存材料实存数小于账面数,其原因为自然损耗所致,经核销后应列作（）处理。
A.
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B.
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C.
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D.
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【简答题】Moving to a new town or even a new neighborhood is stressful at any age, but a new study shows that frequent moves in childhood are related to poorer well-being(幸福) in hood, especially among peop...
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【单选题】在财产清查中发现库存材料实存数小于账面数,其原因为自然损耗所致,经核销后应列作( )处理。
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查看完整题目与答案
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查看完整题目与答案
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查看完整题目与答案
【简答题】Moving to a new town or even a new neighborhood is stressful at any age, but a new study shows that frequent moves in childhood are related to poorer well-being(幸福) in hood, especially among peop...
查看完整题目与答案