string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qa%E5%92%8Cqc%E5%93%AA%E4%B8%AA%E5%B7%A5%E8%B5%84%E6%9B%B4%E9%AB%98 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
qa和qc哪个工资更高
