题目10单选题
结构图如下图所示,开环传递函数为( )<img src="https://p.ananas.chaoxing.com/star3/origin/963067b1d6bdce33f875484a3b4a9b45.png">A. <img src="https://p.ananas.chaoxing.com/star3/origin/caee4a84c710a52b3c002815ef54c269.png">B. <img src="https://p.ananas.chaoxing.com/star3/origin/c0b47fd65e53f00997b3b8de2e5e942c.png">C. <img src="https://p.ananas.chaoxing.com/star3/origin/1cb192e154e06918b80b8146d217bef9.png">D. <img src="https://p.ananas.chaoxing.com/star3/origin/99ed21025d8671efa8bd69be6b6ebc99.png">