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0.8X(2.3-1.17)X1.25X(3.27+0.73)
人气:406 ℃ 时间:2020-06-08 14:00:24
解答
0.8*(2.3-1.17)*1.25*(3.27+0.73)
=(2.3-1.17)*(3.27+0.73)
=1.13*4
=4.52
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