??????????????????????????
?????о?????????????????????????????????????:??????2018??9??-2019??9??300??????????????о?????,?о??????????????????????????????:???????????????(43.75%)???????????31.43%??(P??0.05);?????????????(50.00%)???????????(64.29%)???????(16.43%)???????????(29.38%)???????????(43.13%)???????(6.25%)??????????(P??0.05);????:?????????????????????,??????в??????????彡??????????????????????????????????,??????????????????
?????????????????????????????????????????,???????δ?е????仯??,???????????????????????????????????[1]?????,?б???????????????????????,?????????????????????????,???????????????????????????????????????????????????????????з???,??????????
????1????????
????1.1???????
?????о?????:300????????????;?????????????:2018??9??-2019??9??;???????160:140;????65??92??,???(78??10.52)??;1.2??????????????????????????,???????????????楨?ι????????????,???????????????,???????????????????B???????楨????,??????????????????????,??????????е??????????????????,???????????????y????????
