string(333) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9D%A2%E8%AF%95%E4%B8%AD%E7%9A%84%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98%E6%9C%89%E5%93%AA%E4%BA%9B%2C%E8%AF%A5%E6%80%8E%E4%B9%88%E5%9B%9E%E7%AD%94%E7%90%86%E8%A7%A3 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
面试中的常见问题有哪些,该怎么回答理解
