选择正确的局部剖主视图( )。[img=129x136]180317d4b82cea8.png[/img]
A: [img=120x92]180317d4c30df9e.png[/img]
B: [img=120x93]180317d4cd4097d.png[/img]
C: [img=118x89]180317d4d7a56cf.png[/img]
D: [img=114x91]180317d4e1fee90.png[/img]
A: [img=120x92]180317d4c30df9e.png[/img]
B: [img=120x93]180317d4cd4097d.png[/img]
C: [img=118x89]180317d4d7a56cf.png[/img]
D: [img=114x91]180317d4e1fee90.png[/img]
举一反三
- 选择正确的局部剖主视图( )。[img=129x136]180343f2a833ee7.png[/img] A: [img=120x92]180343f2b349fd3.png[/img] B: [img=120x93]180343f2beac84b.png[/img] C: [img=118x89]180343f2ca32944.png[/img] D: [img=114x91]180343f2d506e37.png[/img]
- 选择正确的局部剖主视图( )。[img=129x136]180366b76ca2830.png[/img] A: [img=120x92]180366b776b59f2.png[/img] B: [img=120x93]180366b783f3dac.png[/img] C: [img=118x89]180366b78e0b0f9.png[/img] D: [img=114x91]180366b797e33a8.png[/img]
- 选择正确的局部剖主视图( )。[img=129x136]180343f6a3f00d8.png[/img] A: [img=120x92]180343f6ae09a47.png[/img] B: [img=120x93]180343f6b9300a3.png[/img] C: [img=118x89]180343f6c402dcf.png[/img] D: [img=114x91]180343f6ce34f43.png[/img]
- 选择正确的局部剖主视图( )。[img=129x136]1803887fa70e51c.png[/img] A: [img=120x92]1803887fb2deb2b.png[/img] B: [img=120x93]1803887fbd41cc3.png[/img] C: [img=118x89]1803887fc824914.png[/img] D: [img=114x91]1803887fd38b3cf.png[/img]
- 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]