一个厂商在一家工厂用布和劳动生产村衫，工厂是用1000万美元买来的。这些投入要素中哪些是以流量

衡量的，哪些是以存量衡量的？如果该厂商不是购买而是租赁了该工厂,你的回答会如何？它的产出是以流量还是存量衡量？它的利润呢？

A firm uses cloth and labor lo produce shirts in a factory that it bought for S 10 million. Which of its factor inputs are measured as flows and which as stocks？ How would your answer change if the firm had leased a factory instead of buying one？ Is its output measured as a flow or a stock？ What about its profit？