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【单选题】
配合回归直线比较合理的方法是( )。A.
任意曲线法
B.
半数平均法
C.
移动平均法
D.
最小二乘法
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反馈参考答案：
举一反三
【单选题】Mr. and Mrs. Black called their landlord ____ about the constant loud music and shouting from their neighbors upstairs. [ ]
A.
to complain
B.
being complained
C.
complained
D.
complaining
【判断题】If a material is subjected to a constant force, it is called dynamic loading.
A.
正确
B.
错误
【单选题】The production function feature called constant returns to scale means that if we:
A.
multiply capital by z1 and labor by z2 , we multiply output by z3
B.
increase capital and labor by 10 percent each, we increase output by 10 percent.
C.
increase capital and labor by 5 percent each, we increase output by 10 percent.
D.
increase capital by 10 percent and increase labor by 5 percent, we increase output by 7.5 percent
【单选题】Assuming that technological progress increases the efficiency of labor at a constant rate is called:
A.
endogenous technological progress.
B.
the efficiency-wage model of economic growth.
C.
labor-augmenting technological progress.
D.
the Golden Rule model of economic growth.
【简答题】苏联时期最大的报纸是（）
【简答题】The practice of maintaining relatively constant dividends is called ________.
【单选题】在一个由NPN型晶体管构成的放大电路中,关于晶体管三个电极的电位,下列说法正确的是
A.
集电极电位一定最高
B.
集电极电位一定最低
C.
发射极电位一定最高
D.
基极电位一定最低
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