青书学堂: (单选题)
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举一反三
- 青书学堂: (单选题) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/c9c6484f-046d-4610-aa45-bca1f932daed.jpg
- 青书学堂: https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/2dbf1945-c808-4353-9a21-f9f12909aa8a.jpg
- 青书学堂: (单选题) 图示均质等截面直杆， 质量为 m ，长为 l, 已知 ， 则 的计算公式为 。 https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ed74d336-17de-41ba-8ddc-89bc136ee1fa.jpg,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/6fb26d08-708c-4ec5-8f8e-003ddce8ef28.jpg,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/811b1021-584e-4d40-80af-9ed9d2ea41c2.jpg
- 青书学堂: (单选题) 图示应力状态，其主应力有何特点( ) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/4431bd74-dfdc-47d8-b179-e8f0079b2a62.gif
- 青书学堂: (单选题) 图示应力状态，其主应力有何特点( ) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/4431bd74-dfdc-47d8-b179-e8f0079b2a62.gif