????:1???????:??95???

2?????

3?l????

4?????????????

5???????????

?6??7?????????????????????? (??????????? ?????????????)6??19????????48??????????,?????????,??????,?23?????????????????58?,??

??? ??????? ?????????

??19?????,??????????????????,???,????????????:18?15????????????13.7?,?????????1.7?????,???????

?4??????,??4?????????300????600??,????????,??

19?????????????????48???????????????????????????????,???80??,?????,?20?????,?????????

23???58???????????????????????,??(??)

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