冷冻肉之解冻,下列何者较优()。 A.于冷藏库(5℃)解冻 B.置于室温(25℃以上

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问题:

冷冻肉之解冻,下列何者较优()。

A.于冷藏库(5℃)解冻

B.置于室温(25℃以上)

C.浸渍于热开水中

D.利用阳光曝晒

考点:食品工艺学肉制品工艺学肉制品工艺学题库
题型:单项选择题

Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.
As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors—retirement, obsolete knowledge and skills, inferior standards of living—lower the status of the aged in society.
A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

Which of the following statements is NOT true

A.Retired people could only live on fixed incomes.

B.Retired people are more skillful than young people.

C.Young people are educated in the new technology.

D.Young people are keeping pace with rapid changes.

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超声波检测桩基完整性,PSD判据对缺陷十分敏感,而对因声测管不平行或混凝土强度不均匀等原因所引起的声时变化,基本上没有反应。( )

题型:单项选择题

光缆经十字吊线或丁字吊线处,预留光缆保护套的长度为:()

A.50厘米

B.40厘米

C.30厘米

D.20厘米

题型:单项选择题

平台内容的开放存取,主要针对()。

A.数字专业出版

B.数字学术出版

C.数字教育出版

D.数字文学出版

题型:单项选择题

下列对马凡氏综合征的二维超声检查所见,哪一项是错误的()。

A.主动脉变宽,伴有二尖瓣退行性变

B.降主动脉局部缩窄

C.主动脉根部、升主动脉都明显扩张,形成动脉瘤

D.主动脉扩张,伴主动瓣关闭不全

E.主动脉形成夹层动脉瘤

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