????:1????????:??????vx

2???????????

3????????????

4??????

5??????????

??1?6???????? ?,??????????????????????????,?????

?

?,???????,???,1966?7?,?????????????????????,??????1986??7?????????,1986??????6?????????

1986??7?1987??????????????10?,?;

1987???????????10???1998?6?????,????????????????,?????;

1998?6?????2005??9????????????,??,??????????,????;

2005???9?2013??12?,??????????????,??;

2013???12?2018?11???????????,?????;

2018????11??,?????????????,??????????????????? ???????:???