Which airflow sensor has a dampening chamber?

A) A Karman Vortex B) A vane airflow C) A hot film MAF D) A hot wire MAF


B

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The ____ emits a high-frequency sound wave and then detects the echo when it bounces off the object.

a. photodetector b. ultrasonic detector c. proximity detector d. proximity sensor

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What emissions do many technologies and operating strategies strive to reduce?

A. CO B. SO2 C. O2 D. NOx

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What happens to the temperature of the refrigerant as you move to the right or left along a constant temperature line outside the saturation curve?

A) The temperature decreases as you move to the left. B) The temperature decreases as you move to the right. C) The temperature remains the same. D) The enthalpy diagram does not show temperature.

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If a spool of welding wire meets specifications, but does not include a record of chemical composition or

strength, it is assumed that the wire is intended for _____. a. rigid control fabrication b. private use only c. critical use d. general use

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