In a compression refrigeration plant the refrigerant flows from the expansion valve and through the （） where it absorbs heat from the space being cooled and becomes a gas or vapor.

Since heat will not flow freely from a body at a （） tem...

单项选择题Since heat will not flow freely from a body at a （） temperature to another at a （） temperature, it is necessary to expend mechanical work, heat, or electrical energy from an external source to achieve refrigeration.

In the process of （）, liquid changes into gas.A.evapora...

单项选择题In the process of （）, liquid changes into gas.

If the capacity of the refrigeration compressor is too ...

单项选择题If the capacity of the refrigeration compressor is too large, the saturation temperature will （）.