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

2???????????

3???????

4??????????

5??????????

??7?????????17????????????? ?????????????,???10??(7?????????17-26?),????????????????????????????????????????????????????????????????,?60~120????????????????,?150~200????,????????????????300?;????3~7?????????????,?????1~2????????

?????????:

17-20???????,?????????????????????????????????????????????,???????????????????,?????????????????,?????,??

21-23??????,????????????????????????????,??,?????

24?,?????????????????????

21-24??,????????????

??????

??11-14??(7??27-30??????),?????????????????????????????????????????????40~80?,?????100~150????

??

1?????

20?,???????21???????????????,??????,??????????????????????????,??,????,?????????????

2???

??10??????,????????????????????????????????????????????????????????,????????????35~39?,??40????

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

??10?????,??1~2?????,??????????1???

???:?????