The most common types of defrost for commercial refrigeration evaporators are:

A) Inductive, and ultrasonic defrost. B) Electric and hot gas defrost.
C) Reverse cycle and air defrost. D) Mechanical and hydraulic.


B

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Oil consumption problems are being discussed. Technician A says a lack of regular services can cause the oil control rings to plug. Technician B says worn compression rings can cause oil consumption problems. Who is correct?

A. Technician A B. Technician B C. Both technicians D. Neither technician

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In direct seeding, the planting medium is 30 percent white sand, 70 percent soil

Indicate whether the statement is true or false

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Technician A says that compressed air is used to drive pneumatic tools in the collision repair industry. Technician B says that all compressors used in collision repair are pistontype compressors. Who is correct?

A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B

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When judging beef animals, there are how many animals in a judging class?

A. 2 B. 4 C. 6 D. 9

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