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
2025-02-26
29
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/3973386.html
相关试题推荐
TheBusinessPermitOfficeinPlainsCountyclaimsthatithasreducedprocessin
SomecommunitiesinFloridaarepopulatedalmostexclusivelybyretiredpeoplea
Allactorsareexuberantpeopleandallexuberantpeopleareextroverts,butnev
Althoughcomputerscanenhancepeople’sabilitytocommunicate,computergamesa
Researchershavefoundthatwhenveryoverweightpeople,whotendtohaverelati
Achildwatchingtelevisionexperiencesaprocessionofsightsandsoundsthatf
Aresearcherdiscoveredthatpeoplewhohavelowlevelsofimmune-systemactivit
Asmalldoseofwidelyusedtranquilizerallowspeopletolieduringliedetecto
Peopleoftenrecallhavingfeltchilledbeforetheonsetofacold.Thissupport
Agroupofchildrenofvariousageswasreadstoriesinwhichpeoplecausedharm
随机试题
Astemptingasitcanbetoletitallhanglooseandstopworryingwhileon
Whichcompanyisdoingthisadvertisement?Topica’sOnlineMarketingand______.
Everyanimalisalivingradiator-heatformedinitscellsisgiven
根据《水利水电建设工程验收规程》(SL223-2008)的有关规定,单位工程完工
A.中精之府B.精明之府C.肾之府D.元神之府E.血之府胆为
公开招标是招标人以()的方式邀请不特定的法人或者其他组织参加投标的一种方式。A
药学是指A:医药分业和医院药房 B:药学科学和药学职业 C:药学科学和药事组
企业人力资源内部供给预测的方法包括( )。A.回归分析模型 B.人力资源信息
共用题干 某投资者李预期甲股票价格将会下跌,于是与另一投资者张订立卖出合约,合
关于阴道的描述错误的是A.为一肌性管道 B.是女性的性交器官 C.阴道穹后部
最新回复
(
0
)