问题
单项选择题
The short run is best defined as:（）
A. the period for which the quantities of all factors of production are fixed.
B. a period of less than one year.
C. the period for which the quantities of some resource inputs are fixed.
答案
参考答案：C
解析：
The short run is typically defined as the period for which the quantities of some, but not all, resources are fixed. Working capital is the difference between a firm's current assets and current liabilities and consists of items (such as cash) that the firm can adjust in the short run.