????:1???????:??100???????

2?????????

3????????

4??????????

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

??????7????????2?(??? ????????????)?????2??,???????????6???30?,???17??22?0.13?????????????2.43??

7????????????????????????????????2????10?????????????????????,??,???????????????????????????????????????????,??

2??8??,???????????????4?4?0.06??????????0.29??

??????,?24??,?????????????????????????????????????????????????????????????????????????1??????????5??,??????,??????,??1.5????????(??????????????) ???:????