A common type of defrost control used on air-source heat pumps is:

A) Demand defrost based on compressor current draw.
B) Time initiated and time terminated.
C) Demand defrost based on suction pressure.
D) Time initiated and temperature terminated.


D

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Technician A says the basic advantage of the snapshot feature on a scan tool is the ability to look at the existing conditions when a code was set. Technician B says GM failure reports do the same thing as a snapshot but also include any fault stored in memory, not just those related to the emissions-related circuits. Who is correct?

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

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____________________ is the condition where an element of a surface, or a derived median line, is a straight line.

Fill in the blank(s) with the appropriate word(s).

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Most cutting tips are made of ____.

A. copper alloy B. stainless steel C. cast iron D. nickel alloy

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When and where was perspective first used in drawing objects?

What will be an ideal response?

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