If the head pressure of a reciprocating refrigeration compressor is excessive, ().
The sudden reduction of pressure occurring within the crankcase of a refrigeration compressor during starting causes the ().
Foaming of the oil in a refrigeration compressor crankcase is caused by ().
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should ().
When fruit is carried as refrigerated cargo,the most frequent cause of its being infected at the discharge port is().
In the refrigeration system, a shortage of refrigerant is indicated by ().
What entry on a dangerous cargo manifest concerning the classification of a cargo is correct? ()
One cause of high head pressure occurring in a refrigeration system can be ().
In a refrigeration system, the refrigerant absorbs the latent heat of vaporization in the().
Should a person be overcome due to lack of oxygen and high concentration of refrigerant, treat with().
In a refrigeration system, foaming of the crankcase oil may cause the ().
The effect of high vapor superheat in a refrigeration system, is a/an ().
In preparing a cargo space for receipt of a shipment of bagged cargo,which instruction for laying dunnage should be followed? ()
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()
The temperature of a refrigerant gas is the highest ().
For a given weight of cargo,the stress on the heel block of a cargo boom().
The presence of bubbles in a refrigeration system liquid line may ().
The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the ().
In a compression refrigeration cycle, the temperature of the liquid refrigerant experiences its greatest decrease in the().
Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its ().
In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ().
The function of () in a refrigeration plant using Freon is to move moisture from all refrigeration system.
A pressure drop in the liquid line of a refrigeration system may cause()
Excessive circulation of the lubricating oil with the refrigerant in a refrigeration system will cause______.