____________________ are toothed wheels fixed to an axle.
Fill in the blank(s) with the appropriate word(s).
Gears
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The equipment attachment plugs used with the duct system are ____, which eliminates several problems when portable tools having three-phase motors are used.
A. grounded B. phase-rotated C. phase-reversed D. polarized
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What are counterweights?
What will be an ideal response?
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Young trees with thin bark are susceptible to ____________________ injury until their bark thickens
Fill in the blank(s) with correct word
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Explain the following concepts in the domino theory: preceding factor; central factor
What will be an ideal response?
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