string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E7%9F%A5%E8%AF%86%E8%80%83%E8%AF%95%E8%AF%95%E9%A2%98 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
监理知识考试试题
