For households looking to adopt solar technology, using photovoltaic panels installed on the roof is generally more cost-effective than installing a solar water heating system._
举一反三
- For households looking to adopt solar technology, using photovoltaic panels installed on the roof is generally more cost-effective than installing a solar water heating system.
- Solar water heaters priced much ______ in America than a comparable system in China.
- Solar water heaters help to lower energy cost and cut carbon emissions.
- By law, solar water heaters are ________ in all new houses in Israel. A: installed B: stalled C: stored D: restored
- What should we do to protect the environment in daily life? A: using clean energy, such as solar energy and wind energy B: using more electricity C: reducing the cost of fund (资金) D: having more bikes