???????? ??????? ??? ?? ??? ??? ??? ??? ?? ??? ??. ????? ??? ??? ?? ??? ? ???? 0.28%? ? ? ?(0.17%)?? ???? ???. ?????? ???(0.49%) ???(0.40%) ??·???(0.33%) ? ??? ??? ?? ???? ???. ???? ??? ? ????? ??? ??? ??1??? ??????? ??? ?? 2, 3, 4 ??? ???? ????? ?? ???? ?? ???? ???.
?? ??1?? 18??? 1000?? ?? 7?1000?~7?2000??, ??? ??1? 35??? 2500?? ?? 6?7000?~7?3000??? ???.
?????? ??? ??? ??? ?? ??? ???? ?? ???? ???? ???. ??? ?? 19??? 500?? ?? 2?7000?~2?8500??, ??? ??1?? 10??? 750?? ?? 3?500?~3?1500??.
?????? ????? 0.38%? ?? ?? ???. ???? ??? ????? ????? ??? ?? ?? ???? ???. ???? ??18??? 2000?? ? 2?6500?~2?8000??.
?????? ????(0.32%) ???(0.25%) ???(0.21%) ???(0.20%) ?? ??? ?? ???. ???? ???? ????? 42??? 500?? ?? 2?8000?~3?3000??, ??? ??? ???? 27??? 1000?? ?? 6?1000?~6?5000??. ???? ??(0.26%) ??(0.24%) ??(0.16%) ??(―0.04%) ??(―0.13%) ????? ???? ? ???? ??(0.45%)? ??(0.43%)? ?? ???.
DUAPI ??2002? 1? 4? ??? ???????135.26(0.28)126.32(0.15)130.13(0.18)