The most commonly used gypsum-board system used in commercial and residential construction is _____

a. multi-ply
b. interleaved
c. single-ply
d. unitized


c

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An example of an older form of wiring is ____.

a. knob-and-tube b. knob-and-cylinder c. button-and-tube d. button-and-cylinder

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The largest hydroelectric plant in the world is the ____

a. Grand Coulee Dam in Washington State b. Glen Canyon Dam in Colorado c. Bonneville Dam in Oregon d. Three Gorges Dam in China

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Ear plugs are primarily worn by welders to protect their ears from _____

a. sparks b. welding noise c. interruptions d. inert gases

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The windings of an alternator are delta connected. The alternator is producing a line-to-line voltage of 480 V. What is the value of the phase voltage?

A. 480 V B. 120 V C. 277 V D. 831 V

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