string(294) "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%E4%BA%A4%E9%80%9A%E5%B7%A5%E7%A8%8B%E6%95%99%E6%9D%90%E9%9A%BE%E5%BA%A6%E5%A4%A7%E5%90%97%E7%8E%B0%E5%9C%A8 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
监理交通工程教材难度大吗现在
