????:1?????QQ:????????

2?????????

3?600?????

4????????

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

????8????????????5??????? (?????????????????????????? ?? ??)5?,??1960????(??????,????)?,?????????????1?????????????,??????1.14???

??,????90???????????8????????????????????????,???????????

???,????24?????,?????????????????????????

???,??????,??564.3????????,??67.2%?(??) ????:??????????????