_______always exists between the theoretical deduction and the result of experimentation.

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问题 _______always exists between the theoretical deduction and the result of experimentation.

选项 A、Deviation
B、Derivation
C、Variation
D、Variety

答案A

解析 本题的四个选项中,A项Deviation的意思是“越轨;偏向;误差;偏航”,如A deviation from a vertical or horizontal line,plane,position,or direction(倾角来自垂直或水平线、面、位置或方向的偏差),B项Derivation的意思是“来历;起源调查”,C项Variation的意思是“变化;变动;变化的程度”,D项Variety的意思是“多样化,变化节。
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