A、up；opened
B、down；open
C、up；closed
D、down；closed
更多“In the suction stroke, the crankshaft is rotating clockwise and the piston is moving （） the cylinderThe inlet valve is （） and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.”相关的问题
A、distance of the suction liquid level above the line of the pump B、distance the suction liquid level is below the center line of the pump C、force necessary to overcome frictional losses in the pump and piping D、amount in inches of mercury the total suction head is below atmospheric pressure
A、centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump B、centerline of the pump and the suction liquid level when the source of liquid is above the pump C、centerline of the pump and the level of the discharge liquid D、liquid levels of the suction and discharge
A、one valve seats upwards, while the other seats downwards B、the reed valves used on the discharge are made substantially thicker and heavier than the suction valves C、the suction valve springs exert a greater tension than the discharge valve springs D、the discharge valve springs exert a greater tension than the suction valve springs
A、vaporizes in the condenser B、reaches the compressor through the suction line C、flashes in the liquid line D、condenses in the receiver
A、Closing of the solenoid valve B、Closing of the expansion valve C、An increase in the suction pressure D、Decreasing the suction pressure
A、at the compressor discharge B、at the compressor suction C、in the expansion valve D、in the receiver
A、the suction pressure to decrease B、the suction temperature to increase C、increased ice formation on the evaporator coil D、excessive short cycling of the compressor
A、saltwater side of the condenser B、refrigerant side of the condenser C、in the evaporator coils D、in the suction strainer
A、have a greater head capacity B、operate with increased impeller efficiency C、discharge through the suction side of the pump casing D、require more power to run the shaft
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