????????12???????27?? (?? ??)????????????????12???????????????27??????

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

????:????????????????????????? “????600????”????

?? ??????????????????

????:1?????600????:????q

2?????vx

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

4????????????

5???????

????????12???????27?? (?? ??)????????????????12???????????????27??????

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

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