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已知http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229698738.png,且http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229753704.png,其中http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229808565.png,则关于http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229863403.png的值,在以下四个答案中,可能正确的是 

发布时间:2021-07-21

A.-3

B.3 或http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229917328.png

C.http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194229972376.png

D.-3或http://picflow.koolearn.com/upload/papers/g02/20120705/20120705194230027376.png

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