企业最重要的资源是（）
A.技术进步
B.产品创新
C.人力资源
D.技术
参考答案：C
It is wise of you to well-trained workers untrained ones in the assembly line. [ ]
A. substitute; for
B. substitute; with
C. replace; by
D. replace; with
向前延伸的内容有哪些？
