【名词&注释】
液压泵(hydraulic pump)、矿物质(mineral)、谷胱甘肽过氧化物酶(glutathione peroxidase)、肝功能(liver function)、静脉注射(intravenous injection)、知识点(knowledge point)、有利于(beneficial to)、还本付息(loan and interest payment)、机械能转换(mechanical energy conversion)
[单选题]偿债备付率是指投资方案在借款偿还期内各年()的比值
A. 可用于偿还利息的资金与当期应付利息
B. 可用于还本付息(loan and interest payment)的资金与当期应付利息
C. 可用于偿还利息的资金与当期应还本付息(loan and interest payment)金额
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