【名词&注释】
技术进步(technical progress)、配电装置(distribution device)、电力设备(power equipment)、本质区别(essential difference)、利息费用(interest expense)、传递信息(transfer information)、实体性损耗、还本付息(loan and interest payment)、项目成本计划、工程量计算规则(engineering measure rule)
[单选题]偿债备付事是指建设项目在借款偿还期内( )的比值。
  A. 可用于支付利息的息税前利润与当期应还本付息(loan and interest payment)金额 
  B. 可用于支付利息的息税前利润与当期应付利息费用 
  C. 可用于还本付息(loan and interest payment)的资金与当期应付利息费用 
  D. 可用于还本付息(loan and interest payment)的资金与当期应还本付息(loan and interest payment)金额 
 
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