- 搜标题
- 搜题干
- 搜选项
单项选择题
A refrigerator has 18.0 kJ of work done on it while 115 kJ of energy is transferred from inside its interior. What is its coefficient of performance? ()
A．3.40
B．2.80
C．8.90
D．6.40
E．5.20
B．2.80
C．8.90
D．6.40
E．5.20
