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

2??????????

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

4????98?

5?????vx???

??1????????4?? (??? ????????? ?)??????????????4??????????????,?16??????,???????????“???”,????,????????

??16????????????“?????????????????”?? ????????? ??????????????

?,????????????“?????”??????????????,?????????,??,????????

??????16?? ???? ???????????????

???????,???????“???”??“??”,?????????????,???????????,??“??????”,??(???)

????:??????????????????