Preparing a house for a future solar array is not complicated and can simplify the eventual installation if done properly. Where there is a south or near-south facing roof, it should be designed to have a minimum of ____ square feet of unshaded area with no mechanical penetrations such as plumbing vents, wires, or other obstructions.
A. 100
B. 200
C. 300
D. 400
Answer: B
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The end against which the line is pulled is called the _____ end.
A. nail B. block C. pin D. peg
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?When plastics pieces are dissolved in a volatile solvent in casting, hardening occurs as a result of _____.
A. ?catalysts B. ?added heat C. ?solvent evaporation D. ?high pressure
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Different brands of oil can be used in a vehicle from one oil change to another if they meet vehicle specifications, because all oil is ________
A) The same API group B) Miscible C) Of the same viscosity D) Both A and C
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Referring to the figure above, the type of roof shown in diagram E is a _____ roof
A) gable B) hip and valley C) mansard D) gable and valley
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