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【多选题】
生产费用按与生产工艺的关系可以分为( )。A.
直接生产费用
B.
直接(计入)费用
C.
间接生产费用
D.
间接(计入)费用
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【简答题】请点击链接,进入该网站复习上课尝过的单词: https://quizlet.com/_5ay5qz
【单选题】Which of the listed statements is correct concerning refrigeration systems?（）
A.
Dehydrators must be used continuously in a refrigeration system
B.
A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hours
C.
A thermostatic expansion valve is used to control refrigerated space temperature
D.
The liquid receiver functions to collect and remove non- condensable gases
【单选题】In a compression refrigeration cycle, the temperature of the liquid refrigerant experiences its greatest decrease in the_____.
A.
evaporator
B.
compressor
C.
expansion valve
D.
condenser
【单选题】In the refrigeration compressor the temperature of the vapor is _____ by compression.
A.
raised
B.
risen
C.
reduced
D.
maintained constant
【简答题】What was essential to a science of refrigeration according to the passage?
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