首页
登录
职称英语
In 1983, when oil prices were still high in my area, I installed a ground-s
In 1983, when oil prices were still high in my area, I installed a ground-s
游客
2023-11-21
57
管理
问题
In 1983, when oil prices were still high in my area, I installed a ground-source heat pump in my brand-new, well-insulated, 1,600-square-foot house. It cost several thousand dollars more than comparable systems that use oil, gas or wood, but I figured I’d recover my higher initial expense m a few years through lower energy bills.
True, my heat pump runs on electricity -- an expensive commodity where I live. But most of its energy comes from the earth, a propylene-glycol solution circulates through 1,200 feet of two-inch-diameter plastic pipe buried three feet deep in a field next to my house. As it travels, the solution absorbs heat from the surrounding soil, even when soil temperature drops below freezing.
My ground-source heat pump also offers important benefits that have nothing to do with economics.
-- Minimal fire hazard -- no chimney, firebox, or heating elements -- only pumps, fans, and a compressor.
-- Cleanliness -- no combustion products, thus no chance of my heating system polluting the indoor air, leaving scummy deposits on walls and furniture.
-- Reliability -- solid-state electronic controls and sealed bearings almost eliminate breakdowns.
-- No maintenance -- no wood to cut, ashes to haul, or chimney to clean.
-- Convenience -- The system runs automatically, even switching from heating to air conditioning as needed. I can simply lock the door and go away for a day, week or month.
Not only did I expect to start saving on energy costs immediately, but I also expected those savings to grow over the years as oil prices continued to soar. Since I was wrong about oil prices, the big dollar savings I’d hoped for haven’t materialized. Nevertheless, I am satisfied, all things considered. [br] One benefit the author mentions is that the system ______
选项
A、uses no electricity
B、has a fire-safety shutoff
C、docs not pollute the air in the house
D、requires less insulation in house walls
答案
C
解析
本题询问该系统的优点。文中列举了五个优点,并有记号一一标出。与原文相比可 知,只有C项是属于优点之一的,原文为“Cleanliness—no combustion products, thus no chance of my heating system polluting the indoor air"。
转载请注明原文地址:https://tihaiku.com/zcyy/3206949.html
相关试题推荐
Whydoesthehonestpublichavetopayhigherpriceswhentheygototheshops?
Whydoesthehonestpublichavetopayhigherpriceswhentheygototheshops?
In1983,whenoilpriceswerestillhighinmyarea,Iinstalledaground-s
In1983,whenoilpriceswerestillhighinmyarea,Iinstalledaground-s
In1983,whenoilpriceswerestillhighinmyarea,Iinstalledaground-s
Peopletendtocomplainalotaboutthe______risingpricesrecently.A、steeply
We’vejustinstalledtwoair-conditionersinourapartment,______shouldmakeg
Withprices______somuch,it’shardforthecompanytoplanabudget.A、fluctua
In1983,whenoilprocessweretillhighinmyarea,Iinstalledaground-sou
In1983,whenoilprocessweretillhighinmyarea,Iinstalledaground-sou
随机试题
Americansusuallyconsiderthemselvesafriendlypeople.Theirfriendships,
水准管分划值的大小与水准管纵向圆弧半径的关系是( )。A、成正比 B、成反
A.白蛋白合成不足 B.血氨产生过多 C.门脉压力增高 D.便秘 E.脾
患者有慢性胃炎,就诊时自诉常有嗳气,反胃易呕症状,胃部常有胀感,诊其苔白滑,脉弦
与常规航摄相比,低空无人机航摄的主要优点包括()。A:降低摄影测量工作成本B:
15岁的小朱由西安跟随父母来到沿海开发区,他听不懂老师和同学们的语言,学习成绩下
学生小明早已达到入学的适龄阶段.但由于父母因交通事故离世。现处于无人监护的状态,
下列对国土空间规划编制的近期相关工作要求中,不正确的是( )。A.同步构建国土
企业加工生产的宝石坯不属于消费税的征税范围。()
发生下列工程事项时,发包人应予计量的是()。A.承包人自行增建的临时工程工
最新回复
(
0
)