计算①8.9+2.35+7.23②7.31+2.15-3.00③4.85+13.77+209.03

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收藏|2022/03/22 21:19

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2022/03/22 21:26

1° 8.9+2.35+7.23=11.25+7.23=18.48.2° 7.31+2.15-3=9.46-3=6.46.3° 4.85+13.77+209.03=18.62+209.03=227.65//13t*9.8N/kg=127.4kN

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