无论是人做功还是利用机械做功都有做功快与慢的问题．如图所示的两位同学将相同的重物均从一楼搬运到三楼所用的时间不同．从图中提供的信息小红 Sketch Coloring Page

无论是人做功还是利用机械做功都有做功快与慢的问题．如图所示的两位同学将相同的重物均从一楼搬运到三楼所用的时间不同．从图中提供的信息小红 Template

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sketch #2023 For variety our own good friends fully understand states; through hard knocks we all our own good friends. priceminister

anonymous

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tomski无论是人做功还是利用机械做功都有做功快与慢的问题．如图所示的两位同学将相同的重物均从一楼搬运到三楼所用的时间不同．从图中提供的信息小红 coloring

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