A.x= B.x= C.平均增長(zhǎng)速度=平均發(fā)展速度-100% D.x=
A. B. C. D.
A.7.5%×9.5%×6.2%×4.9% B.(7.5%×9.5%×6.2%×4.9%)-100% C.(107.5%×109.5%×106.2%×104.9%)-100% D.107.5%×109.5%×106.2%×104.9%