string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A2%84%E9%98%B2%E4%BA%A7%E5%90%8E%E5%87%BA%E8%A1%80%E4%B8%8B%E5%88%97%E5%93%AA%E9%A1%B9%E6%8E%AA%E6%96%BD%E6%98%AF%E6%AD%A3%E7%A1%AE%E7%9A%84 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
预防产后出血下列哪项措施是正确的
