____ shapes are used for most beams and columns in steel-frame buildings.

A. C
B. L
C. S
D. W


Answer: D

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Which of the following will shorten the life of a filament in an incandescent lamp?

a. Operating at cooler temperatures b. Operating at warmer temperatures c. Frequently turning it on and off d. The use of a photosensor

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In choosing material for a girder, the green designer may see some benefits in using ____ instead of built-up lumber girders or steel girders.

A. PVC B. LVL C. plywood D. cast iron

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A vehicle being inspected under an OBD- II testing program and the MIL is ON. What will be the results of the inspection?

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Hybrid electric vehicles usually require special engine oil of what viscosity?

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