首页
登录
职称英语
Read the text below and answer Questions 1-7. Clear
Read the text below and answer Questions 1-7. Clear
游客
2025-02-16
21
管理
问题
Read the text below and answer Questions 1-7.
Clear Lighting
Use energy more efficiently and help save the planet by switching to low-
energy light bulbs.
Many of us still use traditional bulbs around the house. But simply replacing one traditional 100-watt bulb in your home with a low-energy equivalent will save you the amount of electricity required to make 1,200 cups of tea. It will also reduce your annual electricity bill, so as well as using less energy, you’ll be paying less money. This is because traditional bulbs only use 10% of the electrical energy to produce light, while the remaining 90% is wasted as heat. Low-energy bulbs, which are also known as compact fluorescent lamps, or CFLs, are more efficient because most of the electrical energy is used to generate actual light instead.
CFLs are more expensive to buy, costing an average of £6 each compared to 40p for a traditional equivalent, but they work out cheaper in the long run because they use less electricity and are much more durable, lasting at least six times longer.
However, they do have some drawbacks. For example, they can have a slow start-up, taking some time to reach their full brightness, so you are recommended to use them where they will be left on for longer periods, such as your living room or hallway. This also avoids frequent switching on and off, which may also shorten the life of the bulb.
CFLs are also noticeably dimmer when used in cold conditions, such as in a garage or outside, as this can reduce the bulb’s efficiency, so this is not recommended. Finally, CFLs are also likely to be up to three times heavier than traditional bulbs, which may make them unsuitable for some light fittings, so you should always check these before changing your bulbs.
Questions 1-7
Look at the information about lighting on page 140.
Complete the sentences below with words taken from the passage.
Write NO MORE THAN THREE WORDS for each answer.
Write your answers in boxes 1-7 on your answer sheet. [br] Low temperatures may reduce the______of CFLs.
选项
答案
efficiency
解析
... cold conditions... can reduce the bulb’s efficiency.
转载请注明原文地址:https://tihaiku.com/zcyy/3959452.html
相关试题推荐
ReadthetextbelowandanswerQuestions21-27.ENROLNOWAT
ReadthetextbelowandanswerQuestions14-20.AdultEducationC
ReadthetextbelowandanswerQuestions14-20.AdultEducationC
ReadthetextbelowandanswerQuestions14-20.AdultEducationC
ReadthetextbelowandanswerQuestions14-20.AdultEducationC
ReadthetextbelowandanswerQuestions8-13.Rightsin
ReadthetextbelowandanswerQuestions8-13.Rightsin
ReadthetextbelowandanswerQuestions8-13.Rightsin
ReadthetextbelowandanswerQuestions8-13.Rightsin
ReadthetextbelowandanswerQuestions1-7.Clear
随机试题
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
FriendorFoe?CrowsNeverForgetaFace,ItSeemsCrowsand
近球小管重吸收的关键动力是A. B.管腔膜上的同向转运 C.管腔膜上的逆向转
莲子具有的功效是A.敛肺止咳,益气生津,补益肝肾B.涩肠止泻,益气生津,益肾养心
()标志着我国城镇住房制度改革已经进入全面推进和配套改革的新阶段。A.1
A.升高温度 B.降低温度 C. D.加大压力
试说明理解在知觉中的作用。
药品不良反应监测的目的和意义包括()。A.弥补药品上市前研究的不足 B.
引起妊娠期龈炎的直接病因是( )。A.咬合创伤 B.菌斑微生物 C.牙石刺
使用国有资金投资的建设工程发承包,必须采用()计价。A.政府指导价 B.
最新回复
(
0
)