：通过归集一定计算对象上的全部费用，借以确定各该对象的总成本和单位成本的一种专门会计方法是（ ）。A special accounting method for determining the total cost and unit cost of each object by aggregating the total expenses of a certain calculation object is ( )A:编制财务报告Preparing financial reportsB:成本计算Cost calculationC:设置账户Setting up accountsD:复式记账Double-entry bookkeeping答案: 成本计算Cost calculation3、