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提问人：网友hnsdzwy 发布时间：2022-01-07

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The main idea of the passage is_____.A．even Americans are surprised at the big differences

The main idea of the passage is_____.

A．even Americans are surprised at the big differences among themselves

B．there are many differences in character in different parts of the USA

C．there are many reason for the differences

D．stereotypes about people are not necessarily true

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更多“The main idea of the passage is_____.A．even Americans are surprised at the big differences”相关的问题

第1题

In general, dehydrated foods have moisture contents that are well below %.

A、10

B、5

C、15

D、20

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第2题

There are essential components in a spray dryer, they are .

A、atomization

B、air handling

C、separation

D、drying chamber

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第3题

The drying procedure can be divided in to two steps according to the rate of water loss , the two steps are and respectively.

A、falling rate period

B、constant rate period

C、rising rate period

D、inactive rate period

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第4题

For freeze drying, moisture is removed by ,so the original structure of the food is maintained.

A、sublimation

B、evaporation

C、member separation

D、separations

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第5题

According to the knowledge you learnt from principles of food processing, How to obtain food product in high quality and extending shelf life? You may choose any processing method as an example to answer freely

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第6题

During the convection drying process, the water gradient in the material is opposite to that in the temperature gradient, while in the microwave drying process, the water gradient in the material is the same as the temperature gradient.

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第7题

The purpose of drying is to remove enough moisture from food to prevent microorganism growth so as to extent the self life of food.

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第8题

The recrystallization results in an increase in ice crystal size and .

A、decreasing nutrient

B、raising nutrition value

C、effect appearance quality

D、little impact

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第9题

There many factors would influence the Freezing Time, including: .

A、Thermal conductivity of frozen food (k)

B、Convective heat transfer coefficient (h)

C、Area for heat transfer (geometry)

D、Temperature of the freezing medium (TF) and the size of the product defined as the thickness (L).

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