A. 硫酸铵 B. 硝酸铵 C. 碳酸铵 D. 氯化铵
A. 单轮缘 B. 双轮缘 C. 无轮缘 D. 多轮缘
A. Twice the dry bulb temperature B. 10℃ above the dry bulb temperature C. 5℃ above the dry bulb temperature D. Equal to the dry bulb temperature
A. 正确 B. 错误