Which is NOT a feature of a horn?

A) Multi-tone capability B) Volume control
C) Tone selection D) Muting capability


D

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The MAF sensor frequency should change smoothly and gradually in relation to ____________________.

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

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Some proximity detectors employ sound waves and can be used to detect the distance to an object or to determine the position of a object.

Answer the following statement true (T) or false (F)

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All of the following statements are true EXCEPT:

A. accessories often cause noises that can be mistaken for other problems. B. a fan clutch on a coolant pump can cause a noise that sounds serious and is hard to pinpoint. A stethoscope can be used to listen to the noise. C. to isolate noises from defective belt-driven parts or accessories, disconnect the drive belt and run the engine for a short time at idle. D. belts are a common source of noise.

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How is a concentric vent used in a high-efficiency furnace?

A) It creates two close exit points for the vent pipe and combustion air pipe. B) It allows the vent pipe to combine with condensate drainage. C) It directs the combustion air pipe to an outdoor exit. D) It allows a single outdoor exit point for the vent and combustion air pipe.

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