如图所示等直杆，抗拉刚度为EA，则杆段AB的轴向线变形[img=21x19]180396e6acf13a3.png[/img]为:[img=270x115]180396e6b876d77.png[/img]
A: [img=43x44]180396e6c15e664.png[/img]
B: [img=27x44]180396e6ca8c997.png[/img]
C: [img=27x44]180396e6d361b81.png[/img]
D: 0
A: [img=43x44]180396e6c15e664.png[/img]
B: [img=27x44]180396e6ca8c997.png[/img]
C: [img=27x44]180396e6d361b81.png[/img]
D: 0
举一反三
- 如图所示等直杆，抗拉刚度为EA，则杆段AB的轴向线变形[img=21x19]18030ba680607ef.png[/img]为:[img=270x115]18030ba68aa33e9.png[/img] A: [img=43x44]18030ba692b5765.png[/img] B: [img=27x44]18030ba69aeeb49.png[/img] C: [img=27x44]18030ba6a38b7c3.png[/img] D: 0
- 如图所示等直杆，抗拉刚度为EA，则杆段AB的轴向线变形[img=21x19]17de7f2821bb546.png[/img]为:[img=270x115]17de7f282c58fae.png[/img] 未知类型：{'options': ['', '', '', '0'], 'type': 102}
- 如下图所示等直杆，抗拉刚度为EA，则杆段BC的轴向线变形[img=21x19]18030ba6b216143.png[/img]为零。[img=270x115]18030ba6bc1542b.png[/img]
- 如下图所示等直杆，抗拉刚度为EA，则杆段BC的轴向线变形[img=21x19]180396e6e1636fe.png[/img]为零。[img=270x115]180396e6ecd4d00.png[/img]
- 已知随机变量X的概率密度为[img=129x66]17de92201995d30.png[/img]则E(X)=( ). A: 6 B: 3 C: 1 D: 0.5