Renewable ____________ of energy must be used.

Renewable energy includes wind power.

In terms of equivalent calorific value, the lowest price among coal, oil, natural gas and renewable energy is ( ). A: oil B: coal C: renewable energy D: natural gas

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

You can surely(renewable) ______ this book if you phone in advance.

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

中国大学MOOC: Which of the following belongs to clean and renewable energy?

Trees are a renewable resource that when managed properly can ______ our needs indefinitely.

“The essay is to examine potential renewable energy sources.” -- This sentence serves as the background of the essay.

中国大学MOOC: Renewable energies are not competitive with fossil fuels in consideration of health and environmental cost.