string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9C%9F%E5%BB%BA%E9%9D%A2%E8%AF%95%E4%BC%9A%E9%97%AE%E5%93%AA%E4%BA%9B%E9%97%AE%E9%A2%98 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
土建面试会问哪些问题
