A.累計(jì)增長(zhǎng)量等于相應(yīng)的各個(gè)逐期增長(zhǎng)量之積B.累計(jì)增長(zhǎng)量等于相應(yīng)的各個(gè)逐期增長(zhǎng)量之和C.累計(jì)增長(zhǎng)量等于相應(yīng)的各個(gè)逐期增長(zhǎng)量之差D.累計(jì)增長(zhǎng)量大于相應(yīng)的各個(gè)逐期增長(zhǎng)量之和