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

2???????

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

4???????

5???????

?????1?7??????????? (? ?)1?7?,?6.8??????????????????????,???????????????????????????,????

?????????????????????????????????????????????,????,???,?,??????,?????,??

???????,??10?????1???????,10??20??????????????????1?,20???50?????4????????4?????????????????1?7????????????10?????????????????????43?????????,?????????????????

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