?????????????4?????
????
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??ó????(?????????裬???)???????????????
??Pet????????Σ????????1??????1ID;???????2??????2ID;
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?????ü???????ж????????????????ü???;
????ж????????п????????????????????????????;
?????п???????????滻????????????????;
???????ü??????????м??????μ?????λ;???????????????й??
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1??????????????????????10?????????к??;
2???????????=(??????A???+??????B???-18)*???????????;???????????=500;
3?????????????=(???辭??+???辭??)/2;
4??????????????????????????????????????(???裬????)?????;
????????????????????????????????????????40407???????40407????????
