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【单选题】
进行多编辑（PEDIT）时，不可以和多“合并（J）”的是（）。A.
直线
B.
圆弧
C.
椭圆弧
D.
多段线
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举一反三
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【单选题】Which one is wrong about classification and regression?
A.
Regression ysis is a statistical methodology that is most often used for numeric prediction.
B.
We can construct classification models (functions) without some training examples.
C.
Classification predicts categorical (discrete, unordered) labels.
D.
R egression models predict continuous-valued functions.
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