5.You can help stop light pollution and save energy by turning off lights when you aren't using them, using lower watt bulbs (较低瓦的灯泡) if you don't need bright light.根据短文内容,从下列选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。 A. Working under bright lights in ...
Define light bulb. light bulb synonyms, light bulb pronunciation, light bulb translation, English dictionary definition of light bulb. n. A light-emitting device that consists of a gas-filled glass tube or bulb and is used inside electric light fixtures
Certainly not. 3 Although these efforts may seem small, it has provided strong support for drawing the world’s attention to the threats(威胁) we are creating for ourselves. At 100 times less efficient(效率) than the modern light bulbs(灯泡), candles would be the only choice for light ...
Not all LED bulbs are designed to be dimmed and they are available in dimmable and non-dimmable versions. If you want to use a dimmer switch, make sure you choose LED bulbs that can be dimmed, this is indicated on the packaging with the symbol illustrated here. ...
Buy fixtures that fully encase bulbs so all the light is shining down where it's actually needed, not shooting off in every direction. Once you've addressed your own abode, consider encouraging others to take steps as well. Billboard owners and municipality leaders are good starts, since ...
C. The light bulbs are dangerous to the environment. D. It makes most people fail to notice the natural beau y. E. Earth Hour has become an international event since 2007. F. The sudden increase in need for electricity would force them to burm more coals.G. Earth Hour helps people to...
GE's Cync Direct Connect smart bulbs are affordable and full-featured lights that come with a wide variety of options. They're a little less bright than other smart bulbs in their price range, at 750 lumens, but they support millions of colors and different features. Without the need for...
5. ___You can help stop light pollution and save energy by turning off lights when you aren't using them,using lower watt bulbs (较低瓦数的灯泡) if you don't need bright light.根据短文内容,从下列选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。 A. Working under bright ...
As lighting expert Howard Brandston points out, Generally, there are no bad light sources, only bad applications. 出自-2015年12月阅读原文 And there is more to the story, because not only are the devices that house incandescent bulbs shaped to their underlying characteristics, but rooms and entir...
Now that you know the benefits, it’s time to take action! Whether it’s dropping off bulbs at your local recycling center or usingmail-in programs, every step makes a difference. The next time you replace a light bulb, think twice before tossing it in the trash—recycle it instead!