小洁's Profile
初中生
250
points
250
points
Questions
650
Answers
13
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- 1722 views
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- 2010 views
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这是一个控制机器运转速度的装置,指针所指 …
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- 2902 views
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- 1992 views
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- 1732 views
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这里有一个大齿轮,有10块齿轮碎片,如图 …
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- 2073 views
- 1 answers
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- 1232 views
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- 1468 views
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- 3236 views
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根据你的观察,哪六个零件(三个黑色的和三 …
- 1979 views
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- 1381 views
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- 1747 views
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- 1644 views
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- 1550 views
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如图所示,将10枚硬币摆放在桌子上,这样 …
- 3474 views
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- 1483 views
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