原题
Advancements in Renewable Energy Engineering
Photovoltaic (PV) cells that convert sunlight into electricity are one innovative solution to harness renewable energy. When sunlight hits the PV cell, it is absorbed by a semiconductor material, usually silicon. The energy from the light knocks electrons loose from atoms, creating a flow of electric current. This current is then captured and can be used to power electrical devices. A common misconception is that, at night, PV cells store energy like a battery. In fact, they convert sunlight into electricity in real time; to store energy, a separate energy storage system, like a battery, is required. Researchers are also developing what are called moonlight solar panels, which can generate electricity at night, during rain, and under overcast skies. They make renewable energy a more viable option in diverse environments.
Floating wind farms are another interesting innovation. Mounted on buoyant platforms tethered to the ocean floor, they can be deployed far from land, where wind speeds are often stronger and more consistent than those on land. Underwater cables transmit electricity they generate back to shore. While challenges such as maintenance and initial costs persist, the long-term benefits are substantial.
The passage suggests that, compared to traditional wind farms, what is an advantage of floating wind farms?
AThey harness wind energy in larger amounts and more consistently.
BThey are easier to install and maintain.
CThey use underwater cables, which are more cost-effective than cables installed on land.
DThey last for a longer time.
正确答案：A
解题思路
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