图示简支梁,弯矩等于零的x的值为( )。(A为坐标原点)http://edu-image.nosdn.127.net/A21EF98B28767FBF47A708D0D401F092.PNG?imageView&thumbnail=890x0&quality=100
举一反三
- 图示简支梁,弯矩等于零的x的值为( )。(A为坐标原点)http://edu-image.nosdn.127.net/90E799634A9127A238FCA19204D50167.png?imageView&thumbnail=890x0&quality=100
- 图示电路的最简等效电路为( )。http://edu-image.nosdn.127.net/E05D81778D8A97473C26764E8C233275.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示梁BC段的弯矩方程和x 的范围正确的是( )。http://edu-image.nosdn.127.net/3004B37D20CD9A8313C083236246D1E5.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示结构的AB杆A端的弯矩为零。http://edu-image.nosdn.127.net/E8AE634401A9E4E88F52EB6FA582479C.JPG?imageView&thumbnail=890x0&quality=100
- 实周期序列x[n]的基波周期N = 7, x[n]的非零傅里叶级数系数为http://img2.ph.126.net/XcZEVEz5-dK3MzOLu2c83Q==/6608215516029338084.png,http://edu-image.nosdn.127.net/419AFA2F5A1531187DCB45EF46060A23.jpg?imageView&thumbnail=890x0&quality=100。若将x[n]表示成http://edu-image.nosdn.127.net/A2A03272ED5328E9D31CEA139AB794F3.jpg?imageView&thumbnail=890x0&quality=100,则表达式为( )。