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單項選擇題

In the refrigeration compressor the temperature of the vapor is （） by compression.

A.raised
B.risen
C.reduced
D.maintained constant

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單項選擇題

It should be ensured that only （） vapor is handled by the refrigeration compressor.

A.humidity
B.dry
C.steam
D.oil

單項選擇題

A refrigerant gives up heat when it goes through （）.

A.condenser
B.regurgitate
C.evaporator
D.boil coil

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