【多选题】What does “Market Segmentation” include? A: Geographic variables B: Demographic variables C: Psychographic variables D: Product-use variables

（）one of the subjects that appeal to many university students. A: Economics is B: Economice is C: Economics are D: Economics have been

Which of the following statements best describes the study of economics? Economics studies how

Which of the following statements are correct？（ ） A: Psychographic segmentation variables include consumer lifestyles. B: Psychographic segmentation variables include consumer brand loyalty. C: Psychographic segmentation variables include consumer personality attributes. D: Psychographic segmentation variables include consumer's benefit expectations of a product.

Which of the following definitions is proper? A: Economics is the study of the economy. B: Economics is a science of the production and distribution of goods.

Economics is best defined as the study of

Market segmentation variables should always ________.

When we utilize tabular method for transportation problems, the criterion for the optimal solution is ( ). A: the test numbers of non-basic variables are greater than or equal to 0 B: the test numbers of basic variables are less than or equal to 0 C: the test numbers of basic variables are greater than or equal to 0 D: the test numbers of non-basic variables are less than or equal to 0

MySQL中查询系统变量的命令是（ ）。 A: show variables B: show variable C: check variables D: check variable

中国大学MOOC: Economics is the study of