题目9单选题
<img src="https://tihai-oss-cloud.itihey.com/img/bcce7ffc010743e27c51399dc2dbb2af.png"> 弯曲变形内力有剪力和弯矩,上图简支梁中最大弯矩为A. <img src="https://tihai-oss-cloud.itihey.com/img/5719b3f7fe6c88b128fdcabcea3a0b9b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/63bdf84447ecd4a78ccb7421e5f7f621.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0320264e5ab417a7a6c2550b8a198680.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/0b33db5e1783f843fb217013888ad6cd.png">