What measurements are required to check combustion efficiency?
A) O2% , CO2% , and CO ppm
B) Return air temperature, supply and temperature, and stack temperature
C) Manifold pressure, firing rate, and gas heating value
D) Ambient temperature, stack temperature, and flue gas O2%
D
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Cars built before the early 1960s that were equipped with a remote starter relay MOST-Likely had:
A. inertia starter drive units B. permanent magnets C. brushless motors D. a positive engagement starter
In residential wiring, the NEC® requires a ____________________-ampere circuit breaker or fuse to be used with 12 AWG copper conductors.
Fill in the blank(s) with the appropriate word(s).
You are preparing to saw very soft nonmetallic material that requires a smooth cut. You would probably use what type of band?
A) Fine pitch B) Low speed band C) Scalloped or wavy edge D) Diamond edge
In the event of a fire, and in the absence of a serviceable elevator the Fire Warden shall select the safest stairway to use for evacuation based on information received from the Fire Command Station and .
A. directions from immediate supervisors B. the odor of smoke C. the location of the fire D. all of the above