??
??????,????????????,????????????????????????????????,??????????????????
????????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????????????,???,?????????????
???????,?????????????:?????
??????,??????,?????,???????????;???????????,????,??????????????
????????,???,????,??,???,??,????????,????????
?????????????:?????????????????????
?????????????? ????????????????????????