??6??18? ????,?10?????,????,6??????18?????????????14????????????19?????????14?????????,?????????????????????????????????????????????????????????????????????,???????,?????????????(100~200???)??????(?20~50??,????70????),???????????????????

????:??

?:

1???;

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

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

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

??????????????:????????????????????? “??????”_????

?? ????????????? 9?????????

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

2??????V

3??????????

4?200?????

5?????????

??6??18? ????,?10?????,????,6??????18?????????????14????????????19?????????14?????????,?????????????????????????????????????????????????????????????????????,???????,?????????????(100~200???)??????(?20~50??,????70????),???????????????????

????:??

?:

1???;

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

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

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

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