The most common types of defrost for commercial refrigeration evaporators are:
A) Electric and hot-gas defrost. B) Reverse cycle and air defrost.
C) Mechanical and hydraulic. D) Inductive and ultrasonic defrost.
A
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_____ is the ability of a pipe to be bent or formed without cracking or breaking.? ?
A. Hardness? B. Ductility? C. Brittleness? D. Toughness?
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How can one determine between a refrigerant shortage as compared to a suction line restriction on a split AC system?
What will be an ideal response?
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If depth of fill is not indicated:
A) The hole is to be filled completely B) Fill to the lesser of the plate thicknesses C) It is up to the welder D) None of the above
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Which 8085 instruction causes data from input device #12H to be loaded into the accumulator?
A) IN 12H B) MVI A,12H C) STA 0012H D) OUT 12H
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