A feeler or thermal bulb is used for the expansion valve to （）.<br>A:detect the temperature<br>B:detect the pressure<br>C:heat the refrigerant<br>D:accelerate the refrigerant

A feeler or thermal bulb is used for the expansion valve to （）.
A:detect the temperature
B:detect the pressure
C:heat the refrigerant
D:accelerate the refrigerant

出自：海船船员证

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