图示连续梁，已知结点位移为：[img=493x100]1802d9034a7e375.png[/img]，则单元2的杆端位移向量为：[img=421x123]1802d90355a55c1.png[/img]
A: [img=380x108]1802d9035fd887b.png[/img]
B: [img=342x108]1802d9036a5abf4.png[/img]
C: [img=380x108]1802d903755c664.png[/img]
D: [img=362x108]1802d90380f706e.png[/img]
A: [img=380x108]1802d9035fd887b.png[/img]
B: [img=342x108]1802d9036a5abf4.png[/img]
C: [img=380x108]1802d903755c664.png[/img]
D: [img=362x108]1802d90380f706e.png[/img]
举一反三
- 图示连续梁，已知结点位移为：[img=493x100]1802d8fa72acfd9.png[/img]，则单元2的杆端位移向量为：[img=421x123]1802d8fa7eb7bb7.png[/img] A: [img=380x108]1802d8fa8a83447.png[/img] B: [img=342x108]1802d8fa95a41a5.png[/img] C: [img=380x108]1802d8faa11f459.png[/img] D: [img=362x108]1802d8faab50504.png[/img]
- 图示连续梁，已知结点位移为：[img=493x100]1802d8fef05d96f.png[/img]，则单元2的杆端位移向量为：[img=421x123]1802d8fefbab8ae.png[/img] A: [img=380x108]1802d8ff0694985.png[/img] B: [img=342x108]1802d8ff11e5c37.png[/img] C: [img=380x108]1802d8ff1cb99e7.png[/img] D: [img=362x108]1802d8ff26f6fce.png[/img]
- 图示连续梁，已知结点位移为：[img=493x100]1802d9034a7e375.png[/img]，则单元2的杆端位移向量为：[img=421x123]1802d90355a55c1.png[/img] 未知类型：{'options': ['', '', '', ''], 'type': 102}
- 图示连续梁，已知结点位移为：[img=493x100]1802d8fef05d96f.png[/img]，则单元2的杆端位移向量为：[img=421x123]1802d8fefbab8ae.png[/img] 未知类型：{'options': ['', '', '', ''], 'type': 102}
- 已知随机变量X的分布函数为[img=136x49]1803b69024c8270.png[/img] ，则X的均值和方差分别为 A: E(X)=2, D(X)=4 B: E(X)=4, D(x)=2 C: [img=162x43]1803b6902cd8bfb.png[/img] D: [img=162x43]1803b69034d9ffd.png[/img]