If an R-12 refrigeration system has its air-cooled condensing unit on a roof with an ambient air temperature of 100°F and the condenser outlet temperature (refrigerant) is 115°F, with how much subcooling is the condenser operating?
A. 15°F
B. 30°F
C. 100°F
D. 130°F
Answer: A
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____ is any item that is considered finish trim or finish woodwork.
A. Flatwork B. Finishwork C. Millwork D. Woodwork
The centerline of a nozzle is to be placed at 58 degrees from top dead center (TDC) on a tank with a measured circumference of 540??. How many inches from TDC is the centerline of the nozzle to be located?
a. 58 inches b. 76-1/4 inches c. 87 inches d. 110-3/16 inches e. 140 inches
The break in insulation where two sections butt against each other is called a _____.
a. tangential joint b. longitudinal joint c. circular joint d. circumferential joint
Why is genetic engineering preferred over traditional breeding methods among scientists for producing new varieties of plants and animals?
What will be an ideal response?