单项选择题
A.(1), (2) and (3)
B.(1) and (2)
C.(1) and (3)
D.(2) and (3)
单项选择题 In practice, the refrigerant flow after the evaporator is designed to ensure that the vapor leaving the evaporator is slightly （）.
单项选择题 The refrigerant flows through the evaporator, where it （） heat from the refrigerated space.
单项选择题 After passing through the expansion valve the refrigerant should be in the state of （）.