How far above a roof must an extension ladder extend to allow workers access to the roof?________________________
What will be an ideal response?
Three feet
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What linetype is always available when you start a drawing from scratch in AutoCAD? What must you do to access other linetypes?
What will be an ideal response?
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Discuss the pros and cons of herbicides
What will be an ideal response?
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Wrapping an energized conductor around an iron bar creates a(n) _____
a. electromagnet b. rectifier c. transformer d. motor
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If the power element of a TX valve loses its charge, the ____.
A. coil will flood enough to feed liquid refrigerant out of the coil B. valve will get cold enough to create frost on the body of the valve C. refrigerant flow through the various circuits of the coil will become unbalanced D. refrigerant flow to the coil will stop
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