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【简答题】
绝缘子按照结构形式分哪几种?
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】相对湿度φ值可以反映湿空气吸收水汽能力的大小，当φ值大时，表示该湿空气的吸收水汽的能力______；当φ=0时，表示该空气为______。
【单选题】What do the researchers mention the 2008 financial crisis for?
A.
To show that being optimistic also has its bad effect.
B.
To explain why people are trying to win lotteries.
C.
To prove a person's feeling is affected by environment.
D.
To point out human beings are social creatures.
【单选题】What do foreigners tend to do in the regression stage of culture shock?
A.
To enjoy the delicious new food.
B.
To complain about their home country.
C.
To make friends with the local people.
D.
To watch videos from their home country.
【单选题】What position do conservationists take?
A.
The tuna industry cannot survive.
B.
Porpoises could survive if fishermen were cautious.
C.
Marine mammals cannot swim very deep.
D.
Fishermen should look for tuna where there are no porpoises.
【单选题】● (74) functions with two layers of protocols．It can connect networks of different speeds and can be adapted to an environment as it expands． (74)
A.
The hub
B.
The bridge
C.
The router
D.
The proxy
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