保费栏应填______。
A．3‰
B．0.3%
C．0.3/1
D．此栏为空
参考答案：C
若被审计单位财会人员比较少时，出纳员可以兼任债权债务项目的登记作。
The law of diminishing returns states that for a given production process, as more and more of a resource (such as labor) are added, holding the quantities of other resources fixed:（）
A. cost declines at an increasing rate.
B. cost declines at a decreasing rate.
C. output increases at a decreasing rate.
