string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%80%83%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E5%88%B7%E9%A2%98%E6%9C%89%E7%94%A8%E5%90%97%E7%9F%A5%E4%B9%8E => Failed to connect to 101.89.117.144 port 38022: Connection refused"
考二级建造师刷题有用吗知乎
