Before starting the unit:
A) Check the power supply with the unit off. B) Purge the system with nitrogen.
C) Remove the refrigerant. D) Check the low- and high-side pressures.
A
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The weight of a 1/4" round reinforcing bar is 0.17 pound per linear foot. What is the weight in pounds of 138 feet of this bar? Round the answer to the nearest hundredth.
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The diffuse method of light detection uses the __________ mode to detect an object.
A. light-to-dark B. dark-to-light
Air brake equipped trailers made before 1975:
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