A tankless domestic water system provides hot water from a coil in the boiler.
Answer the following statement true (T) or false (F)
True
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The result of a plugged catalytic converter can cause an exhaust restriction which in turn will cause:
A. power increase B. stalling, popping, or backfire C. loss of power D. Both B and C
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When conducting a smoke test, once the stack has been closed with a test plug the pressure should be maintained _____.
a. for five minutes b. until the end of the test c. until pressure fluctuations are seen d. for at least two hours or until the smoke dissipates
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All living organisms and nonliving materials are made of ____________________
Fill in the blank(s) with correct word
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An optical interrupter switch is a special form of the
A) J-K flip-flop. B) photo cell. C) optocoupler. D) laser.
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