价值工程的核心是对产品进行( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
成本分析 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
功能分析 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
价值分析 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
功能改进 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>