?????????
1????20??[???]??????????????????????????????????40????????????????5-10?????1??15?20??1?????1?2???????????????????
2???15????5????????1???2??????????????????????????
3????????????????????30??????????12????30??[???]????
4???????20??90%??100????????2????????????????????????????1.53?????????????156?????
5????15????10????9????12????10?????9????10???????9???????1???2???????????????????????????
6????10?????????????????????????9??????10????????30???????1???2?????????????????????????
7???????9????12????10????9????????6?????12????????6???????1???2?????????????????????????
