问答题

常用比例有、和三种;比例 1 : 2 是指的 2 倍,属于比例;比例 2 : 1 是指的 2 倍,属于比例

答案： ["原值比例","放大比例","缩小比例","实物是图形","缩小","图形是实物","放大"]

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常用的比例有、和三种

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a student who is in his or her first year at a high school or college

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