????:1?????90????????:????????????

2?????????

3???????

4???QT?????

5????????????

???10???14???? (??? ?????????????????????)???????????????14???,?????,???????????????????

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

??,9???????1.6%,???6?????????????????,??????

????,9???????????????????,????????????,??,??????????,??????,???????9???????????????????,9?????????

??????,?????,??????????????800?????,69%??????????????????????(?????????????????) ????????:?????????