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

2??????

3?????

4??????

5????????

????????????????????6?????????10?????? ?,??6??10????10??:?,6?????????10?????????????14?11?????14????,??????????????????????????????????????,?????????????,?????????????????????(100~140??)??(???????30~60?,?????80???????),???????????

?????:??

??:

1?????;

2??????????????????????,??;

3?????,???????????;

4????????,???????

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