string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cad2010%E6%98%BE%E7%A4%BA%E6%BF%80%E6%B4%BB%E7%A0%81%E6%9C%89%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
cad2010显示激活码有问题
