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【简答题】
“ 互换性”是指在机械产品装配时,从制成的同一规格的零(部)件中_______取一件,不需进行任何辅助工作(______________________等),就能与其他零(部)件安装在一起而组成一台机械产品,并且达到预定的_____________________要求。
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