Passage 2
Imagine summer without the refrigerator: hot days with no cold beer, no ice for your fruit drinks, and...probably very little fresh food at all. Artificial cold is key to every part of our current food supply chain, from the farm to the grocery store to the table.
But when it was first introduced in the nineteenth century, industrial refrigeration (制冷)faced negative reaction from the public.In a 2008 paper, Susanne E. Friedberg explains why, focusing on one refrigerated daily food : the egg.
To illustrate the importance of refrigeration for eggs, Friedberg notes that they used to be a seasonal food.Before modem breeds were developed, hens laid most of their eggs in the spring. That meant that fresh eggs were unavailable or very expensive for most of the year.
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2014年经济师初级考试真题《建筑经