string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E6%88%98%E7%95%A5%E7%BB%BC%E5%90%88%E9%A2%98%E7%AD%94%E9%A2%98%E6%8A%80%E5%B7%A7 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
注会战略综合题答题技巧
