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【多选题】
气体存在中，对土的影响叙述正确的有（）A.
自由气体对土的性质影响不大
B.
封闭气体增大了土的弹性和压缩型
C.
气体成分主要为易燃气体时施工要注意安全
D.
封闭气体对土的性质有较大影响
E.
以上全错
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举一反三
【单选题】The word ( ) means 'classification and as qualification'.
A.
characterisation
B.
infringement
C.
trademark
D.
copyright
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【简答题】Listen to the first part of a Valentine story, then write an ending for the story
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【单选题】Which one is wrong about classification and regression?
A.
Regression analysis 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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