To correctly identify pollutant pathways, technicians must understand:
A) How to use a particle counter.
B) How to use a blower door.
C) The biology of potential microbial pollutants.
D) The interaction of the building and its associated systems.
D
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Your small company is considering whether to buy a new automobile or to lease it. You have determined that to purchase a new vehicle it will cost $21 000. After eight years of use, the vehicle can be sold for $4 500. The cost to lease the same vehicle is found to be $3 000 per year for a four-year lease after a delivery payment of $2 000. It is expected that the annual operating and maintenance will cost about $1 800 whether the vehicle is purchased or leased. Should you buy or lease? Use present worth analysis to justify your answer. Assume the interest rate is 4 percent compounded annually.
What will be an ideal response?
Technician A says that platinum tipped spark plugs should never be re-gapped after they have been used in a running engine. Technician B says that spark plugs should not be removed from a hot cylinder head. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
In an ideal op amp has a +/-12 volt supply and a reference voltage of 2 volts on the inverting input. What would the output look like with a +/-5 volt sinusoidal input on the non-inverting input?
A) the output would be a +/-5 volt sine wave B) the output would be a +/-2 volt sine wave C) the output would be a square wave D) the output would be an inverted replica of the input
In areas subject to seismic damage, a minimum of _____ vertical reinforcing bars 1/2" (13 mm) in diameter (#4) must be used in the chimney.
A. two B. three C. four D. six