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【多选题】
表达一个零件的视图的数目是_______________。
A.
以完整、清晰地表达零件内外结构为前提
B.
用三视图
C.
视图数量应最少
D.
越多越好
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【简答题】阅读理解。 May 29th. Dear Jenny, I'm sorry you're ill(病) at home and can't come to school this week, let me tell you what you have on Monday next week. We have math at 8:00. It's boring, I think! Then we h...
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