Antifriction bearings are also called ______________________________ bearings.
Fill in the blank(s) with the appropriate word(s).
roller element
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Motor operation in quadrant ____ produces regenerative braking action when the motor turns in reverse.
A. 1 B. 2 C. 3 D. 4
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Scientists inserted the genes that control the illumination of fireflies into which type of plant?
a. Corn c. Wheat b. Lillies d. Tobacco
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When selecting steel, some things you should keep in mind are:
A) Pliability, friability and its amorphous structure B) Age of steel, color C) Point of origin and lot number D) Hardenability, machinability and strength
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____-party evaluations are prepared by organizations that are fully independent from the manufacturers.
A. First B. Second C. Third D. Neutral
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