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

2?????

3????????

4??????????

5????????????

???8????????????????????6?? (?????? ??????)??6?????????,??????????????6???????????8??,??????????????????100~150????????????????????????????

?????????,5???????????????,?????????

?????????????????????,????????6????????????????????,??????????,?????????;7?,???????????????;8??,?(30~50??????),?????(60~90??)?

???,??????????????,??,????????????????(??) ???:?????????????