举一反三
- 图示扭转轴AB间截面上的扭矩T为（ ）。http://edu-image.nosdn.127.net/B3126A2D36776EB2670A9F6AD30F2329.png?imageView&thumbnail=890x0&quality=100
- 图示为定轴轮系，其传动比大小满足http://edu-image.nosdn.127.net/93603D7ACFC7BC11ABD365A70E34C361.PNG?imageView&thumbnail=890x0&quality=100。http://edu-image.nosdn.127.net/FE6DBD5A6879276CDCB4F09D9D174C0A.PNG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示结构杆BC的轴力为：http://edu-image.nosdn.127.net/9D6AA89720C3073F177361898172AD5F.JPG?imageView&thumbnail=890x0&quality=100
- 已知图示有压混联输水管路（按长管计）各管段的沿程阻力系数http://edu-image.nosdn.127.net/1443EEDD6C2FA09BB126BDB9642044BA.png?imageView&thumbnail=890x0&quality=100，管径http://edu-image.nosdn.127.net/974CD2163F1D3BFAAEDC8DA84872F1CA.png?imageView&thumbnail=890x0&quality=100，管长http://edu-image.nosdn.127.net/76A594A1299928A8955B35FC20252D31.png?imageView&thumbnail=890x0&quality=100，流量http://edu-image.nosdn.127.net/1D52DAEDDD85EC829BD9C6E6F96AE143.png?imageView&thumbnail=890x0&quality=100,,则http://edu-image.nosdn.127.net/DAC36D2F41C6C3F84F776BC849094BA1.png?imageView&thumbnail=890x0&quality=100中k=（ ）。http://edu-image.nosdn.127.net/06283F2B8E549ACD83D8DDBBD7E4BE7C.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示结构C点水平位移为0。http://edu-image.nosdn.127.net/9C0F7503068B5AA695014A424F6DF9FD.JPG?imageView&thumbnail=890x0&quality=100
内容
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中国大学MOOC: 实腹式轴压杆绕x，y轴的长细比分别为http://edu-image.nosdn.127.net/CEDDCE7A3BB52B52DC56A37DE9DF8675.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/2715192C2D5C066B84F9EEC130D1DD78.png?imageView&thumbnail=890x0&quality=100，对应的稳定系数分别为http://edu-image.nosdn.127.net/051E7EF77A20CC8EE7AE73090D7D0B9F.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/CDC96ACA4577E26B3DE9DBF3AFBCEC46.png?imageView&thumbnail=890x0&quality=100，若http://edu-image.nosdn.127.net/991E5D4B35F3193105567CAF1B1CB1EC.png?imageView&thumbnail=890x0&quality=100，则( ) 。
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中国大学MOOC: 下图中，若http://edu-image.nosdn.127.net/3CC508F9AB3640FC7B4FC8A56BCC3C4A.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/1E98E4093ED9A9CF99D5410CB4F9E5FC.png?imageView&thumbnail=890x0&quality=1000011，求http://edu-image.nosdn.127.net/C431073D6B6C788B674E11D5E7EA9B8F.png?imageView&thumbnail=890x0&quality=100（ ）。http://edu-image.nosdn.127.net/3F2606B33B97941F5DFADC9F32BD58AD.png?imageView&thumbnail=890x0&quality=100
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中国大学MOOC: 下列取代羧酸中酸性最强的是（）。http://edu-image.nosdn.127.net/7C237BDF245EC393A5506C4874523609.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/EFA954264582A372C3C9085E40BE80E9.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/926CD4F17B92218A7FF5D06D34C5CAAF.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/6504083F25D32BC8A95C11AC770935E2.png?imageView&thumbnail=890x0&quality=100
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钢制正方形截面轴，其危险截面上受到弯矩My、扭矩T作用，若弯曲截面系数为W， 试判断以下哪一种强度设计准则是正确的（ ）。 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/EE938E2FB463164A4ADFCA198C9FBBEB.png?imageView&thumbnail=890x0&quality=100"]', '[img src="http://edu-image.nosdn.127.net/E9E4CA929C89728FFEBC188EA280623C.png?imageView&thumbnail=890x0&quality=100"]', '', ''], 'type': 102}
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钢制正方形截面轴，其危险截面上受到弯矩My、扭矩T作用，若弯曲截面系数为W， 试判断以下哪一种强度设计准则是正确的（ ）。 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/EE938E2FB463164A4ADFCA198C9FBBEB.png?imageView&thumbnail=890x0&quality=100"]', '[img src="http://edu-image.nosdn.127.net/E9E4CA929C89728FFEBC188EA280623C.png?imageView&thumbnail=890x0&quality=100"]', '', ''], 'type': 102}