单项选择题
In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by （）.
A.increasing refrigerant pressure in the coil B.increasing chilled water flow through the cooler C.sub-cooling the refrigerant in the condenser D.superheating the refrigerant in the compressor
单项选择题 A re-heater in an air conditioning system functions to （）.
单项选择题 If one of the bilge system manifold valves does not properly seat, the （）
单项选择题 An exhaust gas bypass is installed on a waste heat boiler in order to （）.
