图示梁刚度为EI，则图示荷载作用下B截面转角大小为[img=323x167]18039bf204a2f53.jpg[/img]
A: 0
B: [img=40x42]18039bf20f66966.jpg[/img]
C: [img=30x42]18039bf219912a2.jpg[/img]
D: [img=29x39]18039bf2259b551.jpg[/img]
A: 0
B: [img=40x42]18039bf20f66966.jpg[/img]
C: [img=30x42]18039bf219912a2.jpg[/img]
D: [img=29x39]18039bf2259b551.jpg[/img]
举一反三
- 图示梁刚度为EI，则图示荷载作用下B截面转角大小为[img=323x167]18038cca820e44f.jpg[/img] A: 0 B: [img=40x42]18038cca8bf1041.jpg[/img] C: [img=30x42]18038cca95e544a.jpg[/img] D: [img=29x39]18038ccaa0648d0.jpg[/img]
- 图示梁刚度为EI，则图示荷载作用下B截面转角大小为[img=323x167]180316f4d731490.jpg[/img] A: 0 B: [img=40x42]180316f4e2bb3de.jpg[/img] C: [img=30x42]180316f4ee52621.jpg[/img] D: [img=29x39]180316f4f8bdee9.jpg[/img]
- 图示梁刚度为EI，则图示荷载作用下B截面转角大小为[img=323x167]18035f100a6a5e1.jpg[/img] A: 0 B: [img=40x42]18035f10154f998.jpg[/img] C: [img=30x42]18035f102026be8.jpg[/img] D: [img=29x39]18035f102ab435c.jpg[/img]
- ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______
- ${\rm var}(X)=\,$ ${\bf E}[X]=\,$ ${\bf P}(X=3)=\,$ ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______