图示桁架B点竖向位移(向下为正)△ https://assets.asklib.com/psource/2015102815202050082.jpg 为:() https://assets.asklib.com/psource/2015102815201840985.jpg

A . ['['[(4+2https://assets.asklib.com/psource/2015102815203270635.jpg )/EA]paB . [(-4+2https://assets.asklib.com/psource/2015102815203270635.jpg )/EA]paC . [(2+2https://assets.asklib.com/psource/2015102815203270635.jpg )/EA]paD . 0

时间:2022-11-10 11:20:52 所属题库:结构力学题库

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