???????!??10??????????

????:????v:???????

?????????6?????21????????????? ?????,?????????6?21??10????????????????????:????,6???????21????14???22?????14??,???????????????????????????????????????????????????????,?????,????????????????????????????????????????????(100~180??????????????)???????????????????(?30~50?,?????????????80?),?????????????????

??:

1???;

2??????,?;

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

4??????????????????????????,??????????? ????????????:??????