????:1?????????:??98???

2??????????

3??????????

4?????500?

5???98?

???????????12?????????????21???? ????21??,????,??,??????????????????6~8??????,?????????9~11??;????,????????????6~10?,????12????????,?(-21.6?)???????????????(-27.1?)?????(-19.7?)??????(-17.6?)????????????(-20.2?)????????????,??????????

????????

????,?,?????????4~8??????????,?????????????????????????2~4??

????,???,??????,????????????????????????????????????????????7~8?????????????9~10??????,?9???????????????????????????10~11?????

???????????

???????????,??????????????,??????????????;????????????????????????????????;???????,????????,????,?????

??????,?,???,????,?????????,?????????,??,???

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