????2??????16??????????,????????,?????2.5???3?,??????????????????????2.5????????????????????80?????????????

????,?,???????,?????????????,???????????????????,??????????15???,?????(????????????? ??????? ?????? ????)

??:????

??“??8????”

?? ??????????????

????:1???8????:???????

2??????

3???????????

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

5?????

????2??????16??????????,????????,?????2.5???3?,??????????????????????2.5????????????????????80?????????????

????,?,???????,?????????????,???????????????????,??????????15???,?????(????????????? ??????? ?????? ????)

??:????