首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Centuries ago, man discovered that removing moisture from food helps to preserve it, and that the easiest way to do this is to e
Centuries ago, man discovered that removing moisture from food helps to preserve it, and that the easiest way to do this is to e
admin
2010-05-26
59
问题
Centuries ago, man discovered that removing moisture from food helps to preserve it, and that the easiest way to do this is to expose the food to sun and wind. In this way the North American Indians produce pemmican (dried meat ground into powder and made into cakes), the Scandinavians make stock fish and the Arabs dried dates (枣) and "apricot leather" (杏干).
Fruit is sun-dried in Asia Minor, Greece, Spain and other Mediterranean countries, and also in California, South Africa and Australia. The methods used vary, but in general, the fruit is spread out on trays in drying yards in the hot sun. In order to prevent darkening, pears, peaches and apricots are exposed to the fumes of burning sulphur (硫磺) before drying. Plums (李子), for making prunes (梅干), and certain varieties of grapes for making raisins (葡萄干) and small dried grape cakes, are dipped in a salt solution in order to crack the skins of the fruit slightly and remove their wax coating, thus increasing the rate of drying.
Nowadays most foods are dried mechanically. The conventional method of such dehydration (脱水) is to put food in chambers through which hot air is blown at temperatures of about 110℃ at entry to about 43℃ at exit. This is the usual method for drying such things as vegetables, cut meat, and fish.
Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated horizontal steel roller or by spraying them into a chamber through which a current of hot air passes. In the first case, the dried material is removed off the roller as a thin film which is then broken up into small, though still relatively coarse thin pieces. In the second process it falls to the bottom of the chamber as fine powder. Where recognizable pieces of meat and vegetables are added, as in soup, the ingredients are dried separately and then mixed.
Where is fruit usually put to be sun-dried according to the passage? ____________
选项
答案
Generally on trays in drying yards in the hot sun.
解析
转载请注明原文地址:https://kaotiyun.com/show/n4j7777K
0
大学英语四级
相关试题推荐
A、Relievepain.B、Preservelife.C、Keepenergy.D、Preventfurtherharm.C文中谈到了紧急救援的三个目的,分别是:保护生命、防止伤害加重、减轻痛苦,没有提到保存体力,因此答案是C
Thereaxecockroaches(蟑螂)everywhereonEarthexcepttheplacesthataxecoveredwithice.Scientistshavediscoveredabout3,500
Thereaxecockroaches(蟑螂)everywhereonEarthexcepttheplacesthataxecoveredwithice.Scientistshavediscoveredabout3,500
TheVikings’VoyagetoEternitySincetheMerovingianAge,duringthepostRomaneraofthe6th7thcenturiesAD,Norsemenhav
TheVikings’VoyagetoEternitySincetheMerovingianAge,duringthepostRomaneraofthe6th7thcenturiesAD,Norsemenhav
TypesofClimateClimateisthecombinationoftemperature,moisture,wind,andsunshineataplaceoveraperiodofmanyyea
随机试题
卵泡内膜细胞主要分泌的激素是:
腰方肌具有维持腹压的功能。()
PPTP
A.文化水平:初中=1,高中和技工=2,大学和大专=3,硕士=4,博士=5B.健康重要吗,为什么C.你的身高是()cmD.你热爱体育还是文艺E.你是否赞同开展家庭健康教育属于封闭式问卷设计的是
肺循环血流量增多,而左心室、主动脉及体循环血流量减少的先心病为
A.桃红四物汤B.血府逐瘀汤C.复元活血汤D.身痛逐瘀汤E.补阳还五汤
方案评价可分为概略评价与详细评价,不论概略详价还是详细评价,都应包括()。
数据收集好后,还要进行哪些处理来支持网络规划()。
Duringthesummersessiontherewillbearevisedscheduleofservicesfortheuniversitycommunity.Specificchangesforinterc
Withregardtoitssize,theU.S.A.isthe______countryintheworld.
最新回复
(
0
)