A common byproduct of stepwise polymerization is ____and hydrogen chloride.?
A. ?formaldehyde
B. ?acetaldehyde
C. ?benzene
D. ?acetic acid
Answer: D
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All of these are dynamic superchargers EXCEPT _____.
A. centrifugal B. positive displacement C. axial flow D. pressure wave
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Which statement below is correct?
A) Hall-effect sensors should show a constant signal voltage when the engine is cranked B) A pickup coil should be diagnosed with a meter set to DC volts C) A voltmeter is a better tool than a digital storage oscilloscope to diagnose an engine position sensor D) A pickup coil can be diagnosed using a digital storage oscilloscope
In communicating systems, fault history, system run time, system status, and other helpful service information are normally:
A) Available through the service screens of the communicating thermostat. B) Always shown on the main thermostat display. C) Available at the LCD screens on the side of the equipment. D) Available on the manufacturer's website for each installed system.