??? ????? ?????? 8??? ???? ??? ??? ?? ??? ?? ????.

?????? ?? 3?? 8??? ???? ?????? ???? ??? 6? ???.

???? 5? ????? ??? ?? ?? ??? ??? ? ???? ???? ????(?? ? ?? 1.5% ?? 3??? 3%)? ???? ????.

??????? ???, ???? ????? ???? ??? ???? 70～90% ???.

?? ?? ??? ???? 63??(???? 11? ?)? ??·???? 1948? ??? 3850? ??? 98%, ??? ??? ??? ????? 32??(3?4000? ?)? 741? ??? 1292? ??? 74% ????.

????? ?? ???? ???? ? ??? ? ?? ???? ???(?? ??? 2%)? ?? 5??? ???? ????.

??? ???? ????? △?? ??, ??, ??, ??, ??? △?? ??? ???, ???, ??? △?? ??? ? ?? ???? 9?? ??? 12??? ????.

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