What is the formula for the area of a circle?

a. A = 2 ?r2 c. A = 2 ?r
b. A = 2 ?d d. A = ?r2


D
A = ?r2

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In general, a flow switch contains ____ electrical contacts.

a. either normally open or normally closed b. only normally open c. both normally open and normally closed d. only normally closed

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Using a sketch, explain the difference between a handrail and guardrail of a stair, and give their code-mandated heights.

What will be an ideal response?

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Explain the difference between a "pictorial" diagram and a "schematic."

What will be an ideal response?

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Technician A says that the plan of attack for a complete paint job is not as critical as a blend. Technician B says that the type of reducer and hardener used for a complete paintwork may be one that causes the evaporation and curing to be slower than a blend. Who is correct?

A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B

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