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

2?????300?????

3?????100?

4???????

5???????

?????11??26?? (????? ????????)11?????????????????26?????????????????????????,???????,??

?????????

????????,??,?????????????????????????800????,??????????????,??????????768??

???,??,?????????????,?2×180??,??????????????????????????1.6??????????????????????????????????????????,?????????

???????????????,?????????,??50?????????????????????5?????????????????????10??,??“??????????????????”?,??????????????(?????????)

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