????:1?????:?????????

2?????????

3?????????

4?????????

5???80?????

?2????????????????17??????????????????? (???????????)?????????????17??????,???????????«??????????»??????????????????,«?»(1982????)??????????

???????????????????21?????????????????,?“Z????”???????,2200???????????89%?

????,?????:«????????????????»(1982???)??????«????????????????????»??????????????«?????????????????????»(1994?)??????,???,???

????,«???»??????????????,???,??????????????????«????????????????:?????????????????»?????

?????????????????????21?????????????????,??1800?????????????,????2?????????,???????,??????????????????,????????????????????????????(???) ???:????