profit revenue cost formula Moment of torque [R esponding to suggest continued low interest rates and bond purchases at the limiting the central bank's room for manoeuvre in the case of an economic downturn, draghi said the drop was a "the possibility of more distant than it was a year ago". This approach periodically revised future plans based on the implementation of the plan and changes in the environment, and moved forward over the period to integrate short-term and medium-term plans organically. As it is difficult to accurately predict the future of the plan work affect organizational survival and the development of economy, politics, culture, technology, industry, customers and other factors change, and as the extension of planning period, the uncertainty is greater and greater. Therefore, the implementation of a planned implementation of a mechanical, or mechanical, and static execution of a strategic plan by a number of years ago may result in significant errors and losses. Rolling planning can avoid the consequences of this uncertainty. The specific approach is to make plans in a very short and thin way. 5. Accounting earnings depend on the reasonable proportion of income and expenses during the period. Costs that are not associated with the current period should be incurred as assets to be transferred for later periods. In November 2017, Advisor Perspectives published an article said that in addition to the improvement of fuel efficiency, petrol consumption decline is due in large part to the following factors: the ageing staff away from the workplace; The home office model is developing more and more; Social media takes the place of face-to-face communication, and travel is unnecessary. More and more young people are no longer driving their cars. And urban population growth accelerated, reducing per capita gasoline dependence.