In the accompanying figure, the second circuiting symbol from the bottom stands for ____.

A. wiring concealed in floor
B. wiring exposed
C. wiring turned down
D. wiring turned up


Answer: D

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_____ inhabit the arctic tundra of far northern Canada, Alaska, Greenland, and a few Arctic islands

a. Mountain lion b. Musk oxen c. Grizzly bear d. Polar bear

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Even though the cooling wire runs from the thermostat to the air handler, it actually just continues on to the condensing unit. Why isn't the cooling wire run directly from the thermostat to the condensing unit?

What will be an ideal response?

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A hole in the tire tread can be patched with _______

A) A patch B) A plug C) Either A or B D) None of these

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Which type of vent material is not of double-wall construction?

a. PVC b. Type B-W c. Type L d. Type B

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