『??? ????? ????? ????』? ???(秦炯九) ???????? ‘?? ??’? ???? ???? ?? ??? ???. ??? ‘????’??? ???? ??? ??? ?????? ??? ??? ?? ????? ??? ????.
?????? ??PCS ??? 514?? ???? ?? ????? ??? ?? ‘????’??? ??? ??? ???? ??? ????? ???.
‘???? ???? ??? ???????? ??? ??? ?? ??? ???? ??’? ??? 73.0%? ????. ‘??? ???? ????? ????’?? ??? 17.7%? ???. ‘????’? 9.3%. ‘??’? ???? ??? 20? 67.2%, 30? 76.2%, 40? ?? 88.0% ? ??? ???? ???.
?????? ???? 78.2%? ‘????? ??? ??? ??? ??? ??? ????? ? ???? ??’? ????.
‘????? ??? ???? ???? ??? ??? ??? ?? ????’? ??? 15.8%.
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