string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E7%9B%91%E7%90%86%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
21年监理考试答案
