?? ?????????????:?????27.6%
????:1?????????:????????
2??????200???
3??????300????
4???????
5???????
????????????10??????4????(?????????????? ????????????? ??)1???7?????????,????????????????????????,?,?????????????27.6%?
???????????????????? ??,??1??????7????????????13:00??15:30???????14:15?15:45?
???????????????????,????????“????????”??????,????????????,????????????????????????????,??????,????,?????????,??????????????(?)
????:????????????