單項(xiàng)選擇題

A.cause of salt contamination
B.location of salt water contamination
C.chemical makeup of feed-water
D.level of alkalinity in condensate

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A.refrigerant overcharge
B.overfeeding by the expansion valve
C.a restricted suction strainer
D.due to short cycling of the compressor

A.capacity will increase
B.capacity will decrease
C.suction pressure will increase
D.suction pressure will decrease