计算如图所示梁C处的挠转角的大小。EI为常数。( )[img=819x406]1802d896ac47059.jpg[/img]
A: [img=31x46]1802d896b507b08.png[/img]
B: [img=31x46]1802d896bd53f58.png[/img]
C: [img=31x46]1802d896c5e41f6.png[/img]
D: [img=31x46]1802d896cda2e9c.png[/img]
A: [img=31x46]1802d896b507b08.png[/img]
B: [img=31x46]1802d896bd53f58.png[/img]
C: [img=31x46]1802d896c5e41f6.png[/img]
D: [img=31x46]1802d896cda2e9c.png[/img]
举一反三
- 半径为R的半球形水池,其中装满水,要把池中水全部抽出需要做功( ) A: [img=31x46]180350304d2b712.png[/img] B: [img=31x46]1803503055851d1.png[/img] C: [img=31x46]180350305e5ddd4.png[/img] D: [img=31x46]1803503066b82aa.png[/img]
- f(x)在x处可导,a,b为常数,则[img=27x32]1802fa0c04c2042.png[/img][img=234x25]1802fa0c10631ae.png[/img]= A: [img=93x26]1802fa0c195a7ad.png[/img] B: [img=93x26]1802fa0c2233a71.png[/img] C: [img=39x26]1802fa0c2adc024.png[/img] D: f(x)
- 求下列序列的Z变换:[img=133x44]1803aff1c935c1d.png[/img] ()。 A: [img=31x46]1803aff1d170ade.png[/img] B: 1 C: [img=40x55]1803aff1d9ab060.png[/img] D: [img=40x55]1803aff1e199a6b.png[/img]
- 求下列序列的Z变换:[img=133x44]180356760c6d4af.png[/img] ()。 A: [img=31x46]180356761492ca5.png[/img] B: 1 C: [img=40x55]180356761d0c52d.png[/img] D: [img=40x55]18035676259e98a.png[/img]
- 求下列序列的Z变换:[img=133x44]1803dcb4a008aa4.png[/img] ()。 A: [img=31x46]1803dcb4a8ce33d.png[/img] B: 1 C: [img=40x55]1803dcb4b1da619.png[/img] D: [img=40x55]1803dcb4bacc188.png[/img]