• 2022-06-09 问题

    We now use alternative forms of energy such as solar, wind and hydro electric power._

    We now use alternative forms of energy such as solar, wind and hydro electric power._

  • 2021-04-14 问题

    Solar panels, wind turbines, hydro power and geothermal energy and hydrocarbons (natural gas or coal) can all be used to produce hydrogen (a primary energy).

    Solar panels, wind turbines, hydro power and geothermal energy and hydrocarbons (natural gas or coal) can all be used to produce hydrogen (a primary energy).

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