string(274) "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%E8%80%83%E5%89%8D%E6%8A%BC%E9%A2%98%E5%93%AA%E4%B8%AA%E5%AD%A6%E6%A0%A1%E5%A5%BD%E7%82%B9 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
二建考前押题哪个学校好点
