80.简答列车到达进入乙站轨道电路区段两站继电器及控制台状态？
["\u7b54\uff1a1\uff09\u7532\u7ad9\u7684\u5168\u90e8\u7ee7\u7535\u5668\u90fd\u843d\u4e0b\uff0c\u53d1\u8f66\u8868\u793a\u706fFBD\u4eae\u7ea2\u706f\uff1b2\uff09\u4e59\u7ad9\u6709\u901a\u77e5\u51fa\u53d1\u7ee7\u7535\u5668TCJ\u3001\u8f68\u9053\u7ee7 \u7535\u5668GDJ\u548c\u56de\u6267\u5230\u8fbe\u7ee7\u7535\u5668HDJ\u5438\u8d77\uff0c\u63a5\u8f66\u8868\u793a\u706fJBD\u548c\u53d1\u8f66\u8868\u793a\u706fFBD\u4eae\u7ea2\u706f\u3002\u8868\u793a\u5217\u8f66\u5230\u8fbe\u3002"]