Refrigerant is normally sub-cooled in a refrigeration or air conditioning system condenser to （）.<br>A:maintain adequate coil back pressure<br>B:prohibit flashing in the liquid line<br>C:reduce refrigerant volume in the system<br>D:reduce compressor discharge line loading

Refrigerant is normally sub-cooled in a refrigeration or air conditioning system condenser to （）.
A:maintain adequate coil back pressure
B:prohibit flashing in the liquid line
C:reduce refrigerant volume in the system
D:reduce compressor discharge line loading

出自：海船船员证

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