List the variable and the equation that define the enthalpy of a system.
What will be an ideal response?
H = U + PV
H = enthalpy, U = internal energy, P = pressure, V = volume
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In which situations is blown-in fiberglass insulation commonly used?
What will be an ideal response?
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When a cutting job is completed and the oxyfuel equipment is no longer needed, the first step in shutting down the oxyfuel cutting equipment is to _____.
a. close the fuel gas cylinder valve b. back out the fuel gas and oxygen regulator adjusting screws c. open the fuel gas torch valve d. open the oxygen torch valve
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What is meant by a “good” mosquito?
What will be an ideal response?
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Which of the following is considered dangerous when working on equipment or machinery?
A. Electricity B. Hydraulics C. Compressed air D. a, b, and c
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