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对于人均存款与人均收入之间的关系式S t =α+βY t +μ t 使用美国36年的年度数据得如下估计模型，括号内为标准差： β的经济解释是什么？
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【单选题】—What's the reason ______he didn't go to school last week? —The reason was______ he was ill. [ ]
A.
why; that
B.
that; because
C.
that; that
D.
for; what
【简答题】单位时间内流经管道任一截面上的体积量,称为 。
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A.
why; because
B.
why; that
C.
that; that
D.
that; because
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A.
in terms of
B.
in favor of
C.
in honor of
D.
in charge of
【单选题】The reason why the mice in Ader's experiment avoided saccharin was that______.
A.
they associated it with stomachach
B.
it affected their immune systems
C.
it led to stomach pains
D.
they disliked its taste
【简答题】The reason why the mice in Ader’s experiment avoided saccharin was that ________. A) they disliked its taste B) it affected their immune systems C) it led to stomach pains D) they associated it with s...
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