卢瑟福提出原子的核式结构模型.这一模型建立的基础是( ). A.粒子的散射实验

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问题:

卢瑟福提出原子的核式结构模型.这一模型建立的基础是( ).

A.粒子的散射实验
B.对阴极射线的研究
C.天然放射性现象的发现
D.质子的发现

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[A] who [B] whom [C] which

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I have been working with Lily for years, and never before        her so serious![ ]

A. I found        

B. I have found   

C. did I find      

D. have I found

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A.对空气污染大

B.热利用率低

C.混台料残余水分较多

D.混合料强度较低

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A、地区分销商

B、委托代理商

C、特许批发商

D、独立批发商

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()指标与岩石吸水性能无关。

A、吸水率

B、含水率

C、饱水率

D、饱水系数

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