tree 5b6043e1fd3f16ce4c4ea78bde8a0a574eb371ca
parent 24c9e27681b5bd6adf784022d0f9fc3f75a27b8e
author Cheng Tang <cheng.tang@supwisdom.com> 1377871625 +0800
committer Cheng Tang <cheng.tang@supwisdom.com> 1377871625 +0800

修改beep函数