??????? ???????????10?
??????????????2?17???? (?????? ??)???????????????17?????,?,??????????????????????????????????10??
??,17??,???????????,18??????????????,19????????,???????20???????21???????
?,18?,??,???????????,???????????:??????8??????????10??
19???,??????,???????????:??????8?????12??
??,??,?,???(?????????????) ?????:????????????