首页
登录
职称英语
Because the process of freezing food consumes energy, many people keep their ele
Because the process of freezing food consumes energy, many people keep their ele
游客
2024-01-13
59
管理
问题
Because the process of freezing food consumes energy, many people keep their electric freezers half-empty, using them only to store commercially frozen foods. Yet freezers that are half-empty often consume more energy than they would if they were kept fully stocked. Which of the following, if true, contributes most to an explanation of the apparent discrepancy described above?
选项
A、A given volume of air in a freezer requires much more energy to be maintained at a temperature below freezing than does an identical volume of frozen food.
B、The more often a freezer’s door is opened, the more energy is required to maintain that freezer’ s normal temperature.
C、When unfrozen foods are placed in a freezer, the average temperature of a given volume of air inside that freezer rises temporarily.
D、A person who normally maintains a half-empty freezer can cut energy costs considerably by using a freezer that is 50 percent smaller.
E、An electric freezer can operate efficiently only if chilled air is free to circulate within the freezing compartment.
答案
A
解析
本题让我们解释the apparent discrepancy:半空的电冰箱比装满的电冰箱耗能更多,并且要解释双方的矛盾点或差异点是“energy”。因此,我们用关键词“energy”来定位选项,排除了(C)、(E);若一定体积的空气维持于某一温度比相同体积的食物耗能更多,如(A)所述,那么就解释了上面的“discrepancy”,因此(A)正确;(B)不能说明“半空状态为什么耗能更多”;(D)只能说明电冰箱如何才能有效运行,不能解释“半空状态为什么耗能更多”,所以(D)不正确。
转载请注明原文地址:http://tihaiku.com/zcyy/3358824.html
相关试题推荐
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanhe
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanhe
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanhe
随机试题
WALTERSCORPORATION3255TrentonAvenue,Co
Fromchildhoodtooldage,wealluselanguageasameansofbroadeningou
关于责任保险的说法,正确的是()。A.责任保险承保一切法律责任 B.责任保
封闭楼梯间是指设有能阻挡烟气的双向弹簧门或()级防火门的楼梯间。A.甲
某社区卫生服务站2018年开始责任医生进家庭试点工作,并为社区居民建立健康档案,
健康管理服务的特点包括A.整体化 B.标准化 C.系统化 D.个性化 E
胃癌最常见的发生部位A.胃底部 B.胃小弯 C.胃窦部 D.胃体部 E.
某市急救中心收治了一名需要急救但身份不明的重病患者,根据《社会救助暂行办法》,该
下列选项中,不属于成长型基金与收入型投资基金差异的是()。A.投资目的不同
患者男性,35岁,半小时前被刀刺伤左臂,来院急诊,见左前臂伸侧约有4cm长创伤,
最新回复
(
0
)