string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E8%AE%BE%E6%B3%95%E8%A7%84%E6%9D%8E%E7%8F%8A%E4%BF%AE%E8%AE%A2%E7%89%88%E8%AF%BE%E5%90%8E%E9%A2%98%E7%AD%94%E6%A1%88 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
建设法规李珊修订版课后题答案
