The simplest type of lead or guide for a wall is called a ______ lead.

A. return
B. half-back
C. straight
D. rack-back


Answer: D

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Define dielectric strength.

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Refer to the figure below. On an HCFC-22 system, liquid line pressure is 202 psig (1,393 kPa) and the measured liquid line temperature is 100°F (37.8°C). The subcooling is _____.



a. 1°F (0.6°C)
b. 2°F (1.1°C)
c. 4°F (2.2°C)
d. 8°F (4.4°C)

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Name four of the seven major grain crops in the United States

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Name items that should be included in a typical procedure and explain their importance.

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