常用测量仪表的精确度等级应按下列要求选择：除谐波测量仪表外，交流回路仪表的精确度等级不应低于（）；直流回路仪表不应低于1.5级。
参考答案：
2.5级
— How come a simple meal like that costs so much?
— We had ______in your bill the cost of the cup you broke just now.
A．added
B．included
C．contained
D．charged
记账凭证汇总表核算形式下，登记总账的直接依据是( )。
A．付款凭证
B．记账凭证汇总表
C．记账凭证
D．收款凭证
