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问题一:请问为什么图一是operating income加减other income和other expense后变成EBIT再扣interest和tax?图二却是operating income先扣interest再加减other income和other expense?问题二:income from discontinued operations不属于other income吗? 问题三:income from discontinued operation一定是扣完税再单独列示在NI之前吗?