????:1??????????:?????200??????

2????????

3?????150

4????????

5??????100???

??????????????2???17??? (??????????????????? ??)?????????????????4.48???????????????????“??”17??????,??????,??

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

???3.2???????,????????????????,???????????????????????????????????

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

??,???????,?????????????????68%????????????,???????????????????????10????(????) ??????:?????