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 stockfish and the Arabs dried dates and "apricot leather".
All foods include water—cabbage and other leaf vegetables contain as much as 93% water, potatoes and other root vegetables 80%, lean meat 75% and fish, anything from 80% to 60%, depending on how fatty it is. If this water is removed, the activity of the bacteria which cause food to go bad is checked.
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
A. is the one most commonly used today
B. was invented by the American Indians
C. has been known for hundreds of years
D. tends to be unhygienic
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A. 55.48 B. 58.52 C. 59.48 D. 60.52 [简答题]以下业务场景中，不允许员工个人借款的有？
[单选题]( )必须按工作票面要求准确登录安装位置、编号、挂拆时间等信息。
A.安全带 B.工作接地线 C.防坠器 D.以上都是 E. F. G.生产和施工场所消防器材的配备、使用、维护，消防通道的配置等不符合规定。 [单选题]抛煤机的结构按照抛煤的动力来源大致可分为三种，不包括（）。
A.风力抛煤机； B.机械抛煤机； C.风力-机械抛煤机； D.液压-机械抛煤机 [单选题]党的十八大报告对“五位一体”总体布局的阐述是全面推进经济建设、政治建设、文化建设、社会建设、制度建设，实现（ ）、全面协调可持续的科学发展。
A.以人为主 B.以人为本 C.以人为重 [单项选择]汗出恶风，动则更甚，面色白，体倦乏力，其病机为（）
A. 营卫不和 B. 肺卫不固 C. 营阴不足 D. 阴虚内热 E. 湿热内郁 [单选题]’年1月23日起实施的维保公司《设施设备风险管理规定》中指出,维保质量安全部每年( )底前组织对各专业设施设备风险进行评估,根据评估结果编制下一年度《设施设备风险管理规定》
A.1月 B.6月 C.10月 D.12月 [单选题]公路管理机构、公路经营企业应当加强公路养护保证公路（ ）处于良好技术状态。
A.一直 B.经常 C.总是 D.必须 我来回答: 提交
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