首页
登录
职称英语
As the cost of gas and oil for home heating has gone up, many Americans hav
As the cost of gas and oil for home heating has gone up, many Americans hav
游客
2023-11-15
50
管理
问题
As the cost of gas and oil for home heating has gone up, many Americans have switched from these fuels to wood for heating their homes. In 1973, approximately 200,000 wood-burning stoves, intended for home use, were sold in the United States; by 1979, this figure had reached one million; and by the end of 1981, there were as many as seven million home owned wood-burning units in operation in the U. S.
In addition to low fuel bills, many people choose these stoves because their initial cost is very low (the prices range from $ 50 kits to $ 5,000 top-of-the-line models), and because new technology has made wood fires more efficient, cleaner, and, therefore, safer than ever before.
One new technological feature of this type is the catalytic(催化) combustor which adds about $ 100 to $ 200 to the cost of the stove, but which causes much more complete combustion (燃烧) of the wood and therefore bums up more of the pollutants left by incomplete combustion and produces more heat.
A second cost-saving innovation is a device which agitates the wood, increasing the amount of oxygen that reaches the center of the wood pile, and leading to more efficient combustion. The real advantage of this device is that it allows the owner to make use of cheap sources of wood such as dirty wood chips (an industrial by-product) that have almost no commercial value, cost as little as $ 20 a ton, and burn very inefficiently in furnaces without an agitator. [br] Which one of the following is NOT true for the reason why people prefer to buy wood-burning stoves?
选项
A、The initial cost is very low.
B、The fuel costs are cheaper.
C、Wood fires are more efficient, cleaner, and safer than ever before.
D、The wood-burning stoves are more efficient than gas or oil ones.
答案
D
解析
文中第二段指出:many people choose these stoves because their initial cost is very low,and because new technology has made wood fires more efficient,cleaner,and,therefore,safer than ever before,所以D、C两项可排除,第二段开头就有In addition to low fuel bills,加上开头段As the cost of g
转载请注明原文地址:https://tihaiku.com/zcyy/3188112.html
相关试题推荐
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
MostAmericansspendmostoftheirleisuretimewiththemassmedia.Inaddi
随机试题
【T1】HalfwaythroughthesemesterinhismarketresearchcourseatRoanokeC
Increasingnumbersofpeoplehavemigratedfromthecountrysideandmovedinto
A—RelevanceofmotivationtheoriesB—SystematicTrainingC—Personnelmanagement
从期货交易所与结算机构的关系来看,我国期货结算机构是()。A、交易所与商业银行共同组建的结算机构,附属于交易所B、交易所与商业银行联合组建的结算机构,
用一维数组存储二叉树时,总是以前序遍历顺序存储结点。()
管理会计师的专业技能准备是指()。A.积极的价值观 B.不谋私利 C.熟悉财
根据下面资料,回答题 Iwasoutformyusualmorn
土地革命战争前中期的三次“左”倾错误不包括( ) A.1927年11月至19
“在自然界中,既没有原因.也没有结果”;“因果规律的一切形式都是从主观意向当中产
引起肝损伤的含铅类中药有A.雄黄 B.朱砂 C.红粉 D.密陀僧 E.铅
最新回复
(
0
)