______ is an energy form found in nature that has not been subjected to any human engineered conversion process. It is energy contained in raw fuels, and other forms of energy received as input to a system.( )
A: Premium energy
B: Primary energy
C: Principal energy
D: Preliminary energy
A: Premium energy
B: Primary energy
C: Principal energy
D: Preliminary energy
举一反三
- ______ is an energy form found in nature that has not been subjected to any human engineered conversion process. It is energy contained in raw fuels, and other forms of energy received as input to a system.
- Energy conversion, which means the transformation of different energy forms, constitute the basic process of our energy usage.
- The main technical fields of intelligent power generation are () . A: Renewable Energy; New Energy; Large Capacity Energy Storage<br/>Application B: Conventional Energy; Renewable Energy; Clean energy C: Conventional Energy; Renewable Energy; Clean Energy D: New Energy; Clean Energy; Large Capacity Energy Storage Application
- The main technical fields of intelligent power generation are （ ） 。 A: Conventional Energy; Renewable Energy B: New Energy; Clean Energy; Large Capacity Energy Storage Application C: Conventional Energy; Renewable Energy; Clean Energy D: Renewable Energy; New Energy; Large Capacity Energy Storage Application
- The production process of thermal power plant is to convert () of fuel into electric energy. A: chemical energy B: heat energy C: mechanical energy D: kinetic energy