办理D7至D3的调车进路，写出D7XJ的励磁电路。
正确答案:
KZ→D3ZJ4↑→XKJ4↓→XYAJ3↓→5CJ4↓→5／71SJ1↓→5／7DBJF1↑→5／71SJ2↓→1／32SJ1↓→1／3DBJ3↑→1／32SJ2↓→3CJ4↓→D7KJ4↑→D7QJ4↓→D7XJ3－4→D7FKJ4↑→D7XJJ4↑→D7KJ1↑→3DGJ1↑→1／3DBJ1↑→5／7FBJ1↓→5DGJ1↑→ⅠAGJF3↑→XKJ1↓→D3ZJ1↑→KF
答案解析:有
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