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

2??????????

3???????

4??????

5???????

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

???2??,???????,???????????????????????????????,2???????

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

???????????,???14~15??????????????????,?,?????????????????????????,18~20????,????????????????????,?????

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

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

??????,?????????????,??????15~16???

?????,?????????????15????????????,??????????15°C,???????????????????5~8?,???????

????????????,??17??????16?,???????????,????????7~8?????????????????

??????,15???????,??,????????????16??????????,??????????,???????????15???,????????????????????20????

??????,?????????????4???????10°C?????????,16??17°C;???????????????????15??????????26??????,????????????10?????????????,???

???????15??????,????????????,???????????????

???????,??:???????????

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

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

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