不定项选择题今有一台炼钢电弧炉，拟接入开发区变电站，系统参数如图4-2所示。<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/8788109_0.jpg"><br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/8788109_0_1.jpg"><br />