In the late 1970s and early 1980s, several companies specializing in _________________________ developed freestanding computer-drawing stations based on small independent computers called workstations.
Fill in the blank(s) with the appropriate word(s).
computer-aided drawing (CAD)
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A ground ring consisting of 20' of No. 2 bare copper must be buried no less than _____.
a. 1.5' below grade b. 2.0' below grade c. 2.5' below grade d. 3.0' below grade
Some plants secrete chemicals that _____
A) inhibit root growth B) increase root growth C) decay roots D) stimulate roots
The hormone that is released by the kidneys in response to low oxygen levels in kidney tissues is
A) angiotensin. B) cortisol. C) erythropoietin. D) renin. E) epinephrine.
One design for a system requires the installation of two identical components. The system will work if at least one of the components works. An alternative design requires four of these components, and the system will work if at least two of the four components work. If the probability that a component works is 0.9, and if the components function independently, which design has the greater probability of functioning?
What will be an ideal response?