Busted Newspaper Randolph County: Shocking Secrets They Don't Want You To See! Mugshots 62

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要理解irr必须要先理解npv净现值。净现值（net present value, npv）：说的是把未来期望收入的钱换算成现在的钱（跟算利息类似，不过是反向运算，例如明年你会赚110元，假设贴现.

Randolph County Busted Newspaper 48