?? ??11??????????15???
????:1?????????:????????????
2????????
3????????????
4???????100?????
5???????????
???6?????17??(?? ?????????)???????17?,6?16?8???????????????17?8??,???,??,??????????????????,?????????,?,???,???????????????11??????15????0.02???2.55??
17??8????,?,??,?????,???????,?????????????8??11??0.02????????????????????2.55???????;???????20.80????(?18.5????????),????????2.30???????,??32200???
???,??24?????????????,?1.5????????????????????????????,????????????????????????,???2?????????5?,???????????????????????????????(??) ???:??