(来学网)背拉力指数的计算公式是:背拉力指数=
  • A.
    (来学网)拉力(kg)/体重(kg)×100%
  • B.
    (来学网)[拉力(kg)+体重(kg)]/2×100%
  • C.
    (来学网)[体重(kg)-拉力(kg)]/2×100%
  • D.
    (来学网)[体重(kg)-拉力(kg)]/3×100%
  • E.
    (来学网)[体重(kg)-拉力(kg)]×100%