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meiya520 TA获得超过574个赞 有点难哦!!!!! 设一半时间是X分钟则8X+12X=540 X=27(分钟) 540个零件的45%为243个前半时间总共完成27*8=216个还差27个
meiya520 - meiya520 meiya520 TA获得超过574个赞 有点难哦!!!!! 设一半时间是X分钟则8X+12X=540 X=27(分钟) 540个零件的45%为243个前半时间总共完成27*8=216个还差27个 meiya520 play this video Learn more liying Home Shorts Library liying @meiya520 31 subscribers•12 videos More about this channelmoremore Subscribe
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