The circular-flow diagram is an example of
A: a laboratory experiment.
B: an economic model.
C: a mathematical model.
D: All of the above are correct.
A: a laboratory experiment.
B: an economic model.
C: a mathematical model.
D: All of the above are correct.
举一反三
- In the simple circular-flow diagram, A: households own the factors of production. B: households buy all the goods and services that firms produce. C: land, labor, and capital flow from households to firms. D: All of the above are correct.
- CARS model of an introduction means __________________ model.
- This model is our ________________（最新的）model.
- 中国大学MOOC: A circular-flow diagram is a model that
- The essence of science is A: the laboratory experiment. B: the scientific method. C: The study of nature, but not the study of society. D: All of the above are correct.