首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Read the text below and answer Questions 1-7. Clear Lighting Use energy more efficiently an
Read the text below and answer Questions 1-7. Clear Lighting Use energy more efficiently an
admin
2014-12-30
39
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.
Conventional bulbs convert most of the energy they use into______.
选项
答案
heat
解析
... the remaining 90% is wasted as heat.
转载请注明原文地址:https://kaotiyun.com/show/tCNO777K
本试题收录于:
雅思阅读题库雅思(IELTS)分类
0
雅思阅读
雅思(IELTS)
相关试题推荐
Howmanyintegersbetween100and150,inclusive,canbeevenlydividedbyneither3nor5?
A、Thesecondparagraphreliesondifferentevidenceindrawingaconclusionsimilartothatexpressedinthefirstparagraph.B、
Theattitudethatascientist______applyingakindoffoodcolorantscarcelyindicatesthatsheis______,forshemaysimply
Leavingasidethequestionofhowblackholesgeneratetheenergyingamma-raybursts-cosmicexplosionscalledGRBs-their
Akeyfeatureofquantuminformationscienceistheunderstandingthatgroupsoftwoormorequantumobjectscanhavesta
ThispassageisadaptedfromTheAmericanRepublic:Constitution,Tendencies,andDestinybyO.A.Brownson,1866.Thean
AlthoughJohnson’sandSmith’sinitialfascinationwiththefortunesofthosejockeyingforpowerinthelawfirm____afteraf
ThebarchartbelowshowsthepercentageofAustralianmenandwomenindifferentagegroupswhodidregularphysicalactivityi
InParagraphI,thewritersuggeststhatAboriginalartinvitesWesternerstoengagewith
随机试题
下列哪种T细胞具有特异性杀伤功能
A.超声心动,左室径65mmB.超声心动IVS:LVPW为1.5:1C.超声心动出现右室前壁以及房室沟处无反射区D.超声心动二尖瓣EF斜率下降E.超声心动室间隔连续中断肥厚型心肌病
绕线式感应电动机在启动时,为了减少启动电流和保证启动转矩,可转子绕组()
既是工程拨款或贷款的最高限额,也是控制单位工程预算的主要依据的文件是经过批准的(C)。
社会工作者小兴针对社区矫正对象成立的“星星点灯小组”属于()。
一级预防是指对病因明确的疾病的预防。二级预防是对病因不甚明确的或对多病因的疾病采取的预防措施。下列属于二级预防的是()
某汽车坐垫加工厂生产一种汽车坐垫,每套的成本是144元,售价是200元。一个经销商订购了120套这种汽车坐垫,并提出:如果每套坐垫的售价每降低2元,就多订购6套。按经销商的要求,该加工厂获得最大利润需售出的套数是()。
莫扎特
下列属于Access对象的是
Whatdoesthemanwantthewomantodo?
最新回复
(
0
)