單項選擇題

A refrigerant with oil in solution has a （）.

A.higher boiling temperature for a given pressure than does a pure refrigerant
B.lower boiling temperature for a given pressure than does a pure refrigerant
C.boiling pressure equal to that of a pure refrigerant at a given pressure
D.boiling point will not be affected by entrained oil

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單項選擇題

Which of the following terms would best describe the temperature at which a liquid boils at a given pressure?（）

A.Degree of saturation
B.Saturation temperature
C.Superheated temperature
D.Degree of superheat

單項選擇題

To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the （）.

A.pump must always be primed
B.volute must impart a radial and rotary motion of the water suction side
C.connection must guide the liquid to the lantern rings
D.stuffing box should not be allowed any water leakage

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A refrigerant with oil in solution has a （）.

你可能感興趣的試題

Which of the following terms would best describe the temperature at which a liquid boils at a given pressure?（）

To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the （）.