In the NEC®, Article __________ contains requirements for grounding and bonding residential electrical systems.

a. 200
b. 230
c. 240
d. 250


d. 250

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To remove green stains from a wall, spray the wall with _____ .

A. a muriatic acid solution B. water C. a solution of potassium or sodium hydroxide D. a solution of acetic acid and hydrogen peroxide

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A specific color that has been darkened through the addition of black is called what?

A. a shade B. a secondary C. CMYK D. a tint

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A wind turbine is rated at 41% efficiency.  If the wind has 1,350 kW of power, the electric power output expected should be:?

A. ?55.35 kW B. ?553.50 kW C. ?796.50 kW D. ?1,294.65 kW

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Explain why granite is the most durable of all building stones. Where would you recommend the use of granite?

What will be an ideal response?

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