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

2???????

3???QT?????

4?????QQ

5???????

?2????????????????????????21? (?? ??????????????)2????????????????21?????,?,????????;????????????????????????

???,?,1977?????11???,???????????????????????????????????,??????????????

??,1973?????????5????,????,???????????????????????,??

???????????????????,1971??????2??????,????????????????????????????????,??(???????????) ???:????