【单选题】When pitch, stress and length variations are tied to the sentence rather than to the word, they are collectively known as ________.
【简答题】The business buying center is the group of people who make purchasing decisions on behalf of a company.
【判断题】In the business buying center, buyers are given formal responsibility for making the purchase while deciders are the individuals who authorize those decisions.
【判断题】市场细分的基础是顾客需求的差异性,所以凡是使顾客需求差生差异的因素都可以作为市场细分的标准
【判断题】《雀之灵》的体态特征与傣族人民的生活习惯并无关系。