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【单选题】
已知条件数为131.6,则
A.
不存在共线性
B.
存在弱共线性
C.
存在中等强度共线性
D.
存在严重共线性
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B.
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A.
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A.
on, in
B.
in,at
C.
on,at
D.
at,in
【判断题】桡骨头半脱位多发生于10岁以下的儿童 。 ()
A.
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B.
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