<p>图示结构EI=常数，截面C的转角是： <img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/23/b4/23b468dcf4ff97091d290e7426ae6570.jpg" style="width: 100%;height: auto;"><img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/94/26/9426f2c22beb5683dfae869c0a063fee.jpg" style="width: 100%;height: auto;"></p>