Test analysis: Credit card is an electronic payment card with the functions of consumption, transfer settlement, cash deposit and withdrawal, credit loan and so on. In the process of using credit cards, the functions performed by money are circulation means and payment means, which is correct. The value scale refers to the function of money performance and measuring the value of all other commodities, and the storage means refers to the fact that money is kept as a general representative of social wealth. Therefore, in a sense, credit cards have no function of value scale and storage means.