string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E5%AE%9E%E5%8A%A1%E8%80%83%E8%BF%87%E5%BF%83%E5%BE%97 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2020一建机电实务考过心得
