string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E6%A1%88%E4%BE%8B%E5%88%86%E6%9E%90%E6%80%8E%E4%B9%88%E5%AD%A6%E6%AF%94%E8%BE%83%E5%A5%BD => Failed to connect to 14.18.117.71 port 38220: Connection refused"
监理案例分析怎么学比较好
