string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%BA%8C%E5%BB%BA%E6%9C%BA%E7%94%B5%E8%80%83%E7%82%B9%E6%B1%87%E6%80%BB%E5%8F%8A%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
2021二建机电考点汇总及答案
