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【多选题】
关于不确定性因素产生的原因,下列说法正确的是( )。
A.
所依据的基本数据不足或者统计偏差
B.
预测方法的局限
C.
未来经济形势的变化
D.
技术进步
E.
计算复杂的定量因素的影响
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【单选题】So that's Ok — Friday at 11 o'clock.
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I'm afraid that's out of the question .
B.
Right, I look forward to seeing you then .
C.
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