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