DNA is formed from units made up of all of the following except:
a. oxygen c. sugar
b. nitrogen d. phosphate
A
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Which of the following treatment methods is used to minimize hardness of the water?
a. softeners b. neutralizing tanks c. activated charcoal filters d. manganese oxidizing filters
Insulation must protect from flashover damage and _____.
a. moisture damage b. impulse damage c. bearing damage d. tracking damage
The largest theoretical voltage gain obtainable with a CC amplifier is ________
A) 10 B) 1 C) 100 D) dependent on ?
The __________ provides detailed information regarding many factors that affect electrical installations, maintenance and electrical system design and layout.
A. National Electricity Commission (NEC) B. National Electricity Constitution (NEC) C. National Electric Code (NEC) D. National Fire Protection Association (NFPA)