Push strategy requires manufacturers to take middlemen as the main promotion object.
A. 对
B. 错
Personal selling belongs to pull strategy.
A. 对
B. 错
What's the difference between push strategy and pull strategy?
可见光疗法不包括
A. 红光
B. 蓝光
C. 蓝紫光
D. 多光谱
E. 红外线