单项选择题
A.lower；higher
B.shallower；deeper
C.larger；smaller
D.higher；lower
单项选择题 In the process of （）, liquid changes into gas.
单项选择题 If the capacity of the refrigeration compressor is too large, the saturation temperature will （）.
单项选择题 If the capacity of the refrigeration compressor is too small, the excess vapor will accumulate in the evaporator, causing the pressure to （）.