?? ???????????????!???????

????:1???????????:???
2?????????
3????????
4?????????
5???????
2????????20???????????,???????????200??????,???????????????????????
???20?????????????5??05????????????????????????????????????????????,??200?????????????????????????????????????,???????????,??,?????????????????????????,???

????,??,??????????????????????????????????????,??,?????????,??????????????,????????????????????????????????,?????????????2:1,????????????200??????????400????????????????

?????????????????????????,?800???????????????,??10?(???????????????????????????>>),?????????????2???????????????15???????,?????????????????

??????????1????????????????????????,???????,???????????,???????????,??????????????????,???????????????????????????????????????????,????????????????,??????
?????????????
20???????????????????,???????,??????????????,???????,???
?????????????,?????????????,???
??????????????????,???????,?????????????????
??,???????????,??????
????????????????????????,??????????,????????????2??????????????????????????20?????????????????????,????????????200??????????,??????????,?????????????????????????

???????????? ????:?????????????????,????????????????????,??????????????,???????????,???

??????????????????,????,??????????????????1????????????????,???????????????????,???????????????????,??????,??????,?????????????,?????????????????

?????????????? ??????:??????????,?????????,????????????,???????????????????????????????�????????�??????????????????????????,?????,????????,???????????????(???????????????)
