string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E6%9C%BA%E7%94%B5%E8%80%83%E7%82%B9%E5%BD%92%E7%BA%B32021%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
二建机电考点归纳2021答案
