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【单选题】
以下公式是（）的计算公式。A.
平均误差
B.
平均绝对误差
C.
均方误差
D.
标准误差
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反馈参考答案：
举一反三
【单选题】If the supply of a product decreases, we would expect equilibrium price
A.
to increase and equilibrium quantity to decrease.
B.
to decrease and equilibrium quantity to increase.
C.
and equilibrium quantity to both increase.
D.
and equilibrium quantity to both decrease.
【单选题】. – ______Bob be the manager of our company? – He ______ be, but I’m not sure.
A.
Can; may
B.
Can; can’t
C.
May; must
D.
May; mustn’t
【单选题】If the supply of a product increases, we would expect equilibrium price
A.
to increase and equilibrium quantity to decrease.
B.
to decrease and equilibrium quantity to increase.
C.
and equilibrium quantity to both increase.
D.
dand equilibrium quantity to both decrease.
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