Below the zone of aeration is the groundwater zone where water-saturated rocks called ____ trap water
A) pools
B) aquifers
C) lakes
D) cisterns
B
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In hospitals, schools, and prisons, electrical heat trace systems are used for _____.
a. temperature maintenance of domestic hot-water pipeline systems b. viscosity control on chemical pipelines c. thermal regulation d. moisture control on air lines
The metric unit of weight is the ____________________, which is the weight of the amount of water it takes to fill a cube that is 1/100 of a meter long on each side.
Fill in the blank(s) with the appropriate word(s).
Technician A says that the purpose and function of the cooling system is to maintain proper engine operating temperature. Technician B says that the water pump controls engine coolant temperature by opening at its rated opening temperature to allow coolant to flow through the radiator. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
What components on an oil furnace should be changed annually?
A) The fuel-line filter B) The fuel-line filter, nozzle, ignition transformer, and electrodes C) The fuel-line filter, nozzle, and electrodes D) The fuel-line filter and the nozzle