In electrical circuits, the _____ wire protects the operator.
A. live
B. control
C. grounding
D. neutral
Answer: C
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What characteristic must a refrigerant have to be used as a drop-in replacement for another refrigerant?
a. Similar molecular structure b. Compatible with existing compressor oil c. Similar operating pressures and temperatures d. Higher flammability
Which of the following has not been cited by the Federal Water Pollution Control Administration as the largest contributor to industrial thermal pollution?
A) chemical companies B) electric power plants C) steel manufacturing plants D) land development companies
Which of the following groups of organisms are responsible for greatest amount of organic matter decomposition in soils?
A) microflora B) microfauna C) macrofauna D) autotrophs E) mesofauna
_______________ are used to cut away sections of the building and show details of construction.
A. Elevations B. Cutting planes C. Floor plans