????:1??????????:???????????

2?????

3???400??

4?????????????

5????????150???

??8????16???????????????? ??,????8????17???22???,?????????????????,??,????????????????????????????????,17??????19?????????????,??,?????,?????30~60?,????80~130???????????:

17?????,????????????????,????(50~80?)?

18??,?????????????????????????????????????,???????????????????????????????????????????????????(50~90????????)?

19????,???????????????????????????????????

??,17????????,????????,??,?,????????????????,??????????????????????????? ?????????????:???????????????????????