中国大学MOOC: A utility is an important service that is provided only for a certain number of people.
举一反三
- A utility is an important service that is provided only for a certain number of people. A: 正确 B: 错误
- 中国大学MOOC: 1.Which is not included in the service provided to the passengers in the business class?
- 中国大学MOOC: Scientists only knew that it was collocated on certain principles.
- ______ is a public service such as gas or electricity provided for people to use. (U3-3)
- 中国大学MOOC: Money that a business has been paid in advance for a service that will be provided later is called _____.