string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%99%95%E8%A5%BF2021%E4%BA%8C%E5%BB%BA%E6%9C%BA%E7%94%B5%E7%9C%9F%E9%A2%98 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
陕西2021二建机电真题
