如图所示,采用截面法分析杆件AB截面间的内力大小等于( )。http://edu-image.nosdn.127.net/426D917C58C68BB223E075E544B04F18.PNG?imageView&thumbnail=890x0&quality=100
举一反三
- 用力法计算图示结构,杆件截面为矩形,线膨胀系数为α。其内力为( )。http://edu-image.nosdn.127.net/9D7E91388EC4F42920008E39DDAB07EB.JPG?imageView&thumbnail=890x0&quality=100
- 图示圆截面杆件的危险截面一定在A截面,危险点位于截面的最上缘。http://edu-image.nosdn.127.net/9CAF082ACA65F5402852D7B74B791CE2.png?imageView&thumbnail=890x0&quality=100
- 逻辑电路如图(a) 所示,若各输入信号波形如图(b) 所示,则Q1、Q2的波形如图(c) 所示,对吗?假设两个触发器的初始状态均为0。http://edu-image.nosdn.127.net/BEBCCC056ABBD6F251A01C1C632863DF.png?imageView&thumbnail=890x0&quality=100 http://edu-image.nosdn.127.net/5592FA167A8A7D8C93AD633F0E01D161.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/C853EF51EFF13D688C5BEDB9CD8C030C.png?imageView&thumbnail=890x0&quality=100
- 如图所示的工字型截面横梁,合理的焊接次序为( )。 http://edu-image.nosdn.127.net/00A13AA2ACADEB821C151F9DE3C2344A.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( ) 。