-()-ssg-12 2.5%3 4 1 20001.5%-2 3 2826253026255510- - ():():- 2# -1 2#2 3 4 7010m25 600110%22008 abc43/31-21%3180%80%80%603021-2-123%31223542541212341056-7- 1100406060100604010010060 10060100604060 52-2100406010040100100404025%3,., ,. - 152-20%22003200316-2003912004720gb/t50531-20091500180100220100+2203%=9.61801995521995522011232011511803202180100=180+1003%=8.4?