刺蒺藜具有的功效是
A. 平肝
B. 疏肝
C. 两者均是
D. 两者均非
Customer training and customer consulting are two areas for service differentiation that manufacturers can use with their products.
A. 对
B. 错
The product-line length can be obtained by averaging the number of variants within the brand groups.
A. 对
B. 错
Companies normally develop product lines rather than a single product and introduce price steps such as a low-, average-, and high-priced computer system.
A. 对
B. 错