7、下列两圆柱相贯线画法中不正确的是（）http://edu-image.nosdn.127.net/F4EA9DBBAF4146E7896952026549B6B6.jpg?imageView&thumbnail=890x0&quality=100
举一反三
- 6、 下列截交线画法中正确的是（）http://edu-image.nosdn.127.net/5CDE9BFC2867E2C8D9A851F107120FE3.jpg?imageView&thumbnail=890x0&quality=100
- 已知下图，主视图和俯视图相贯线正确的是：http://edu-image.nosdn.127.net/4B6D81E79571871944E41070C4B0740E.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 若第9题中当电路中总电压http://edu-image.nosdn.127.net/45D53DF610EBF196EBE5238589C91ABF.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/8232D55E2C1346F746EFBB0780167F51.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/A2CC3366BF7376F66D8EFFEB40B97149.png?imageView&thumbnail=890x0&quality=100，以下叙述正确的是
- 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
- 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( ) 。