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

2?????????

3????????

4???????????

5?????????

????????????12?19??? (?? ???)?????????,??????????????????????“???”????????????19?100??????,?????????5.4?,?20?3??,?????

12???????????19????,?????“?”??????????????????????????????????????(?????)

12????????????18????,????????“?????????”?23???,???,????“????????”???,???

??,?????????,??????????????????????,??????“???????????”???????????,????????

????12?????????????????????19??????????,?????????4.3????,?2.5%,?????????????4.5??,??

???????,??12?19?????????????,?8.5???????,??19.2%;??403.8??,???22.6%,??(??????)

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