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2017-11-12View Original

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参与：奖3~5财富；回答正确：奖10财富；注：此贴有效时间48小时。问答题：箱形粱的变形有哪两种？答案有拱变形，扭曲。动动手指参与进来，大家学到知识才是我们最终目的。 https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif 两天后答案自动公布【每日一题】催化焦化重整油品调和版2017年汇总贴 https://bbs.hcbbs.com/thread-1811219-1-1.html 【一问一答】催化焦化重整油品调和版2017年汇总贴 https://bbs.hcbbs.com/thread-1826018-1-1.html

Reply #22017-11-13

扭曲是主要矛盾。应按先扭曲后拱变形顺序进行

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