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

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

????7?????????????1????? ????????????,?????7?????????????1???????????10????:????,7??????????1??14?????2??14???????????????,??????????????????????????????????????????????????????????????????????????,???,????????????????????????,??????????????(250~260?)?????(?30~60?????????????,????80??),?????

?????:??

????:

1??;

2???,?;

3???????????????,??????????????????????????;

4????????,?????????????????????????

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