string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E7%BA%A7%E9%80%A0%E4%BB%B7%E6%A1%88%E4%BE%8B%E5%81%9A%E9%A2%98%E9%A1%BA%E5%BA%8F => Failed to connect to 101.89.159.206 port 38100: Connection refused"
一级造价案例做题顺序
