“?? ?? ???? ????? ??? ? ??? ??? ????. ??? ?? ??? ???? ??? ????….”(????·???)?? ???? “??? ??? ??????? ????? ??. ????? ???? ?? ??? ??? ??? ? ?? ??? ??? ?? ??.”(????·???)? ?????.

??? PC?? ????? 23～26? 13? ?? ??? ?? ????? ??? ?? ??, ??? ??? ????. ? ??? 1?3?54?? ‘??? ???? ??? ??? ??? ??’? ??? 25.1%(3?39?)? ???? ‘??? ????? ???? ??? ??’? ???? 74.9%(1?15?)? ???.

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