This is a cold forming process used to uniformly roughen a cylindrical or flat surface with a diamond or straight pattern.
a. roughening
b. pressing
c. forming
d. knurling
d. knurling
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A balancing valve is used to control temperature and pressure for _____.
a. tubs and showers b. water closets c. lavatories d. water heaters
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What is a gas pilot light?
A) a small flame that is used to light the main burners B) an LED that indicates the burner activity C) a light that allows the technician to see inside the furnace D) the first portion of the main burner that remains on at all times
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Which of the following is NOT an analog device?
A) a thermocouple B) a light switch C) an audio microphone D) a 10-turn potentiometer
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NFPA __________ is the standard that contains minimum requirements and procedures for a safety and health program.
A. 1901 B. 1932 C. 1001 D. 1500
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