题目5单选题
定积分 <img src="https://tihai-oss-cloud.itihey.com/img/8ae2947a6af4f7f2bc382c9f8f1b66b6.png">在几何上表示( )A. 线段 <img src="https://tihai-oss-cloud.itihey.com/img/98815abd91e7e047d57cf342cebbbefa.png">B. 线段 <img src="https://tihai-oss-cloud.itihey.com/img/d0de3851ec038fd5f2cc5703c60f17f9.png">C. 矩形面积 <img src="https://tihai-oss-cloud.itihey.com/img/1a43be22830e5f70f898d4ed714ea9ce.png">D. 矩形面积 <img src="https://tihai-oss-cloud.itihey.com/img/236ec1dd540d2d2775bba97f5a6131fb.png">