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

????:?????150??????:?????400?????

??????8??5?????? ?????????????,?????????????8???????????5????10??:

????,8?5???14????????????????????6????14??,????????????????????????????????????????????????????????,?????????????,???????(100~160?);??(????????????????20~50????,?????????80?????),????????

??:

1?????????;

2???????,?????;

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

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

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