string(246) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%BF%80%E6%B4%BBcad2012%E6%98%AF%E4%B8%BA%E5%95%A5%E6%BF%80%E6%B4%BB%E7%A0%81%E9%94%99%E8%AF%AF => Received HTTP code 403 from proxy after CONNECT" 激活cad2012是为啥激活码错误

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激活cad2012是为啥激活码错误