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

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

3????????

4?????vx

5???????????

?????????????????2???5??????(??? ??????????????????)??????5??,???(1?28?????????????-2????4??),??2????????????????4???????????????????(??????),????????????????????16.7?,????????????????3.96?,?,??

??,?????1934?????????????,??????96.8???,??23.1?,??????????????????,?????????????3000???????,????66.4%?

?,???“??+??????”?????,??????????????,??,???,?359?????

?,????,?,??,??????????????????????,????(???????????????????????????????????????) ????:????????????????????