A. 0.67 B. 1. 00 C. 1. 33 D. 1.67

恬恬2019-12-17  13

问题 A. 0.67 B. 1. 00 C. 1. 33 D. 1.67

选项

答案C

解析[img]/upload/tiku/218/2651644_1.jpg[/img]
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