图(a)所示结构EI=常数,取图(b)为力法基本体系,则δ<sub>11</sub>X<sub>1</sub>+△<sub>1c</sub>和△<sub>1c</sub>分别等于______。<img src='https://img2.soutiyun.com/shangxueba/ask/55302001-55305000/55304853/23d5564b4a1ddd32474fcf5e7ca15782.jpg' />

A.△,<img src='https://img2.soutiyun.com/latex/latex.action' /> B.-△,<img src='https://img2.soutiyun.com/latex/latex.action' /> C.△,<img src='https://img2.soutiyun.com/latex/latex.action' /> D.-△,<img src='https://img2.soutiyun.com/latex/latex.action' />

时间:2023-08-18 09:56:20

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