string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qa%E4%B8%BB%E7%AE%A1%E4%B8%8Eqc%E4%B8%BB%E7%AE%A1%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.117.144 port 38017: Connection refused"
qa主管与qc主管的区别
