string(270) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B1%B1%E4%B8%9C%E4%BA%8C%E5%BB%BA%E7%9C%9F%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88%E8%A7%A3%E6%9E%902021 => Failed to connect to 101.89.120.29 port 38025: Connection refused"
山东二建真题及答案解析2021
