string(328) "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%E5%AE%9E%E5%8A%A1%E6%95%99%E6%9D%90%E6%A1%88%E4%BE%8B%E9%A2%98%E9%9C%80%E8%A6%81%E8%83%8C%E8%AF%B5%E6%8E%8C%E6%8F%A1%E5%90%97%E7%9F%A5%E4%B9%8E => Failed to connect to 61.171.74.35 port 38027: Connection refused"
一建实务教材案例题需要背诵掌握吗知乎
