单选题Bad valves operation of the reciprocating air compressors can be detected by observation of （）.Athe discharge temperature lowBthe discharge temperature highCthe discharge pressure riseDthe inter-stage pressure low
单选题
Bad valves operation of the reciprocating air compressors can be detected by observation of （）.
A
the discharge temperature low
B
the discharge temperature high
C
the discharge pressure rise
D
the inter-stage pressure low
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