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If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should（）.
A:increase the flow of the cooling water through the condenser
B:adjust the high pressure cutout to maintain the desired pressure
C:open the hot gas bypass temporarily to reduce capacity
D:purge non-condensable gases to reduce the excess pressure

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出自：海船船员证

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