One disadvantage of using premix compound is that it must be kept from _____.
a. freezing
b. spoiling
c. souring
d. separating
Answer: A
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What is usually used to check the aim of piston cooling jets?
A. laser beam B. plumb bob C. perspex template and rod D. vice grips
An operational amplifier can be used as a(n) ____.
a. bipolar transistor b. oscillator c. field effect transistor d. noninverting amplifier
Technician A says that the sum of the voltage drops in a series circuit should equal the source voltage
Technician B says the current (amperes) varies depending on the value of the resistance in a series circuit. Which technician is correct? A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
How is the Annual Fuel Utilization Efficiency (AFUE) efficiency rating determined?
A) by multiplying the amount of combustion air with BTU output B) using the NIST equation for 100 percent efficiency C) using the NIST equation for 100 percent efficiency minus losses D) by comparing new furnace units to the efficiency of older models