[单选题]
相同工况下，R717、R22、R12、R134a制冷循环的单位质量制冷量由大到小排序为（）。
A.R717、R12、R134a、R22
B.R22、R134a、R12、R717
C.R12、R134a、R717、R22
D.R717、R22、R134a、R12
参考答案与解析：
-
相关试题
A.R717、R12、R134a、R22
B.R22、R134a、R12、R717
C.R12、R134a、R717、R22
D.R717、R22、R134a、R12