string(259) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=crm%E7%B3%BB%E7%BB%9F%E7%9A%84%E5%9F%BA%E6%9C%AC%E5%8A%9F%E8%83%BD%E6%9C%89%E5%93%AA%E4%BA%9B => Failed to connect to 14.18.117.71 port 38069: Connection refused"
crm系统的基本功能有哪些
