____ materials and devices must be used in an effort to prevent fire or shock hazard.

a. Recommended
b. Suggested
c. Shared
d. Listed


d. Listed

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A ____ is a mechanism used to raise and lower a small car vertically within a building.

A. tote box B. cart transfer system C. dumbwaiter D. horizontal tote box transfer system

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The section modulus of a frame is a measure of a frame's strength based on all of these factors EXCEPT:?

A. ?Height B. ?Width C. ?Thickness D. ?Length

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If the least significant bit (LSB) of a four-bit binary-weighted resistor D/A converter connects to a 200 k? resistor, which resistor is needed for the next bit?

A) 400 k? B) 300 k? C) 100 k? D) 200 k?

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The compound gear _____________.

A. is the gear tied to the gear train's output B. is the gear that supplies power to the gear train, often tied to a motor C. is used primarily to change the direction of a gear train's output D. is a gear set with multiple gears on one shaft

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