string(267) "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%E7%AC%AC%E4%BA%94%E9%A2%98%E7%AE%97%E9%87%8F => Failed to connect to 125.88.227.171 port 38114: Connection refused"
一级造价案例第五题算量
