如何通过参数A和B控制参数C的“是”与“否”？ [课程编码4456]

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如何通过参数A和B控制参数C的“是”与“否”？

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例如：

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1.当A大于B时，C=是：

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C=A>B

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2.当A或B大于1200时，C=是：_hqruvlubnl
C=OR(A>1200,B>1200)

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3.当A=是，则C=否：

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C=NOT(A)tqizufgogixswvtoftiavvetkkusmwmclcxvbsinlingjtxv
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