string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E6%B3%A8%E5%AE%89%E6%B3%95%E8%A7%84%E7%9C%9F%E9%A2%98 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
2021年注安法规真题
