Conductors in pipe organs shall have ____ insulation.

A. standard polymer
B. thermoplastic or thermosetting
C. thermoelastic or thermo-molded
D. hybrid plastic/polymer


Answer: B

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A direct-fired make-up air unit typically achieves a combustion efficiency of _____.

a. 70 percent b. 80 percent c. 90 percent d. 100 percent

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____________________ occurs when the cool side of the metal becomes molten and a hole opens in

the surface.

Fill in the blank(s) with the appropriate word(s).

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____ CO poisoning is used to indicate those cases when individuals are exposed on more than one occasion to the gas-usually at comparatively low concentrations.

A. Acute B. Developmental C. Chronic D. Incidental

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Boots that offer shock protection against current traveling through the sole are _______ rated.

A. shock protection (SP) B. voltage rated (VR) C. electric shock (ES) D. electrical hazard (EH)

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