string(328) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%8D%8E%E4%BC%9A%E8%AE%A1%E7%BD%91%E6%A0%A1%E5%BA%94%E8%AF%95%E6%8C%87%E5%8D%97%E5%92%8C%E7%BB%8F%E5%85%B8%E9%A2%98%E8%A7%A3%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.117.71 port 38069: Connection refused"
中华会计网校应试指南和经典题解的区别
