A. 0.667; B. 0. 85; C. 1. 20; D. 0. 56?A

书海库2019-12-17  6

问题

选项 A. 0.667; B. 0. 85; C. 1. 20; D. 0. 56?

答案A

解析[img]/upload/tiku/38/8788357_1.jpg[/img]
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