string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%A4%A7%E7%9B%91%E7%90%86%E6%98%AF%E5%9B%BD%E4%BC%81%E5%90%97 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
中大监理是国企吗
