中国大学MOOC: The earliest forms of personal selling involved _________ systems. The participants in a transaction directly exchange goods or services for other goods or services without using money.
举一反三
- Consumers directly buy goods or services from a seller over Internet without an intermediary is called ____________________.
- business-to-business (B2B) market All the and that want goods and services to use in producing other goods and services or to sell, rent, or supply goods to others.
- Barter is known as the exchange of goods without the exchange of money.
- to exchange goods for other goods without the use of money______
- Money is a measurement for value of goods and services、