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r/(r-3.3)=12.2/7.34 r=8.28 求中间的计算过程
人气:369 ℃ 时间:2020-04-11 17:41:50
解答
r/(r-3.3)=12.2/7.34
12.2*(r-3.3)=7.34r
12.2r-7.34r=12.2*3.3
4.86r=40.26
r=40.26/4.86=8.284
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