单项选择题
It should be ensured that only （） vapor is handled by the refrigeration compressor.
A.humidity B.dry C.steam D.oil
单项选择题 A refrigerant gives up heat when it goes through （）.
单项选择题 A refrigerant boils and vaporizes in the （） in a compression refrigeration system.
单项选择题 The latent heat of evaporation is dissipated in the （） in a compression refrigeration system.
