The human comfort zone is defined as one in which the dry-bulb temperature is _____
a. 40°F to 60°F
b. 58°F to 65°F
c. 65°F to 72°F
d. 68°F to 78°F
d. 68°F to 78°F
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Precast concrete curtain (PCC) wall panels are non-load-bearing elements. Yet the concrete used in them is of higher strength (generally 5,000 psi) than that used in the structural frame of the building (general 4,000 psi). Explain why that is so.
What will be an ideal response?
The work center in the footstock:
A) May be live or dead, depending on the work type B) Drives the workpiece C) Is always a dead center D) Is always live
What is commonly done when a drop-in refrigerant is placed in operating equipment?
A) A crankcase heater is installed. B) The oil is replaced. C) A leak-detecting dye is added. D) The refrigerant piping is replaced.
When installing a spherical roller bearing, the locknut is tightened using a(n) _____
a. spanner wrench b. open end wrench c. hydraulic pump d. locknut