工程上区分塑性材料和脆性材料的标准是看其延伸率大于等于还是小于（ ）。file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtml1/01/clip_image002.gif
举一反三
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- 区分塑性材料和脆性材料的标准是看其延伸率大于等于还是小于
- 26.属于倍半萜类化合物的是 A: mg src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image008.jpg">;
- 27.下列哪些化合物属于单萜 A: mg src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image010.jpg">;
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