profitability margins The investment of securities provides an important means for the central bank to conduct financial macro-control, which is of great significance to the sustainable and efficient development of the national economy. Mr Draghi said the positive news about eurozone growth meant that the bank's council was "increasingly confident" that inflation would strengthen over the long term and become "self-sustaining". But he added that the current policy needed to be maintained to "maintain inflation", reaching the ECB's target of close to 2 percentage points. “It’s time to end this undercutters’ charter and for the government to scrap this loophole. It’s recent review into modern employment practices called for precisely that.” 3. The cost of accounting earnings is listed in historical cost. Due to the current accounting practice in the enterprise asset is measured at the historical cost in, with the cost nature is the historical cost has been derived from the law of the transfer, so as to determine the income is an important factor in the cost and the historical cost. (1) spiritual gain -- spiritual satisfaction; The international monetary fund (IMF) being worried, said discuss decomposition "disorderly exit may lead to the European Union, asset prices fall sharply", and is yet to be completed task list "is very long, so the time is ambitious".