string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E5%AE%9E%E5%8A%A1%E8%8B%8F%E5%A9%B7%E8%83%BD%E8%BF%87%E4%BA%86%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
一建机电实务苏婷能过了吗
