string(258) "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%E8%BF%9B%E5%BA%A6%E6%8E%A7%E5%88%B6%E6%95%99%E6%9D%90%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
监理进度控制教材答案
