There are two kinds of noises: the external and internal noise.
商务英语：案例篇
章节列表
Unit 1 Business ethics: Doing well by doing good12Unit 2 Marketing: Searching for long-term customer satisfaction12Unit 3 International trade: To apply your comparative advantage12Unit 4 Competition: Profile of monopoly11Unit 5 Human resource management: Employee benefits critical to both employers and employees11Unit 6 Communication in business: To apply the model of speech communication12Unit 7 E-Commerce: The faceoff - Amazon vs. Alibaba13Unit 8 Customer service: Empathy engine2Final exam40