????????2??13???? ?(CBC)???,???12??,??“????”???????????51????

??????????:????????????????????

??,“???51?????,????????????(?????????????????????)??????????,?????,?????????”

2?????????????????????7??????,?????????,??“???”,????

???????,?51??,?“?????????????”?????

????:???????? “????”_????

?? ??:?????????????51???

????:1?????:?????

2??????

3?????

4?????

5?????

????????2??13???? ?(CBC)???,???12??,??“????”???????????51????

??????????:????????????????????

??,“???51?????,????????????(?????????????????????)??????????,?????,?????????”

2?????????????????????7??????,?????????,??“???”,????

???????,?51??,?“?????????????”?????

????:????????