支架结构尺寸如图……
[img=464x98]17ca1d18f080f4e.png[/img]
[img=354x232]17ca1d18fa46ef5.png[/img]
A: 108.3
B: 93.8
C: 81.2
D: 187.5
举一反三
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]18036de4b8088be.png[/img] B: [img=75x24]18036de4bf77b71.png[/img] C: [img=75x24]18036de4c8172a3.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]1803645ffb36da1.png[/img] B: [img=75x24]180364600306be0.png[/img] C: [img=75x24]180364600c8ab8b.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]18035b3d47a8410.png[/img] B: [img=75x24]18035b3d50597f9.png[/img] C: [img=75x24]18035b3d59275e6.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]1803637a2a05d69.png[/img] B: [img=75x24]1803637a32412c9.png[/img] C: [img=75x24]1803637a3ab9225.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]1802daf0ea2780e.png[/img] B: [img=75x24]1802daf0f1ac337.png[/img] C: [img=75x24]1802daf0f9eeb81.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)