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【判断题】
决策树过拟合时,先剪枝和后剪枝的效果和计算量完全一样,因此可以随意选择。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】v.撤退,退却_____
【单选题】P19
A.
They were the first settlers in Europe
B.
They were the conquerors of Norway
C.
They discovered Iceland in the ninth century
D.
They settled on a small island north of England
【单选题】P19
A.
They run away immediately.
B.
They avoid looking at them.
C.
They make threatening sounds.
D.
They show anger on their faces.
【简答题】Writing. Suppose you are Sonia. Complete the following letter. Introduce what your friends are doing according to the pictures. （假设你是Sonia，根据下列4张照片和所给的单词完成一封信，介绍你的朋友们都在干什么。） First: Tom and Mary, sing ...
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