????:1??????????:???????

2???????150???

3??????????

4?????????

5????????

??????????????2???????2? (????? ???????????????????)??????(???????????????????)??????????????2??1????????????,??????????????????????????

?,???2??1????????????????????????????,????????????,??

??,???????,????????,?????????????

??2?1??????????????,??????????????????????????????90%?????

2??????????????2?????????????,???,??????????????(?) ???????:?????????????????