string(256) "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%A1%88%E4%BE%8B%E9%A2%98%E4%BC%9A%E9%87%8D%E5%A4%8D%E8%80%83%E5%90%97 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
一建案例题会重复考吗
