A.[实测体重(kg)-标准体重(kg)]÷标准体重(kg)×100%
B.[标准体重(kg)-实测体重(kg)]÷标准体重(kg)×100%
C.[实测体重(kg)-标准体重(kg)]÷实测体重(kg)×100%
D.[标准体重(kg)-实测体重(kg)]÷实测体重(kg)×100%