生产就是一种转换功能，是一个将生产要素经过投入、转换（加工与服务活动），而得到产出物的系统过程。所以，可以把它简化为（）。
参考答案：一个投入-产出系统
Rivendale Enterprises issued a 3-year, $ 20 million face, 8% semiannual coupon bond when market interest rates were at 9%. What was the initial balance sheet liability and what percent-age of the cumulative interest expense occurred through year 1 Initial liability Year 1 interest expense（）①A. $ 1948421331.84% ②B. $ 1948421333.05% ③C. $ 2000000033.05%
A. ①
B. ②
C. ③
The goods we offered are ( ) good quality with reasonable price.
A．in
B．of
C．with
D．upon
