单项选择题

A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.

A.evaporator pressure decrease
B.evaporator coil over-feed
C.evaporator capacity increase
D.expansion valve diaphragm rupture

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单项选择题

A.head capacity to improve
B.discharge to be reversed
C.efficiency to decrease
D.slippage to decrease

单项选择题

A.gums, acids, and varnishes
B.removed by cellulose type filters
C.neutralized by oil additives
D.not removed by absorbent filters

单项选择题

A.repack all valve stems
B.lubricate it prior to use
C.replace the foundation bolts
D.balance the warping heads