题目内容
The most infamous greenhouse gas is( )
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( )is the process of removing heat, and the practical application is to produce or maintaintemperatures below the ambient.
An important consideration in selecting a lubricating oil for use in a refrigeration compressorfor the oil to( )
Subcooling increases the( )of the refrigeration cycle.
The temperature at which a fluid boils or condenses, is known as( )and varies withpressure.
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