string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E7%9B%91%E7%90%86%E5%B7%A5%E7%A8%8B%E4%B8%89%E6%8E%A7%E8%AF%95%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
2020监理工程三控试题及答案
