string(283) "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%E5%B8%88%E6%A1%88%E4%BE%8B%E7%AD%94%E6%A1%88%E5%A4%AA%E5%A4%9A%E5%86%99%E7%9A%84%E6%89%8B%E7%96%BC => Failed to connect to 14.18.117.71 port 38041: Connection refused"
监理师案例答案太多写的手疼
