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种子的物理特性-导热性、比热容、吸附性、吸湿性、平衡水分

Authored by 娇 管

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University

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种子的物理特性-导热性、比热容、吸附性、吸湿性、平衡水分
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26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

种堆的导热量与以下哪个因素成反比?( )

内外温差

传热时间

种堆表面积

种堆高度

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

种子导热系数随水分含量的变化趋势是( )

升高

降低

 无规律

与水分无关

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

春末夏初,仓储种子升温时,应采取的主要措施是( )

通风降温

密闭仓库

增加湿度

翻动种子堆

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

种堆的传热方式包括( )

传导传热

 对流传热

辐射传热

 光合作用

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

以下哪些因素会导致种子堆导热速度加快?( )

种子水分含量高

种堆空隙大

种堆表面积大

种堆高度低

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

种子热容量增大的条件包括( )

种子含水量高

脂肪含量高

 种温一致

 种堆密闭

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

种子堆的传导传热速度比对流传热快。( )

正确

错误

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