• 2022-06-19
    图示简支梁中间截面B上的内力为——。[img=793x397]1803da5f71418a6.png[/img]
    A: M=0,[img=18x22]1803da5f7a66d8f.png[/img]=0
    B: M=0,[img=18x22]1803da5f7a66d8f.png[/img]≠0
    C: M≠0,[img=18x22]1803da5f7a66d8f.png[/img]=0
    D: M≠0,[img=18x22]1803da5f7a66d8f.png[/img]≠0