Technician A says that hydrogen exists by itself in nature. Technician B says that hydrogen has better specific energy than fossil fuels. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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Air that forms layers due to temperature differences is referred to as being _____.
a. stratified b. stacked c. turbulent d. unconditioned
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Given the circuit in Fig. 11.80, find I? and the overall complex power supplied.
 FIGURE 1.png)
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Which of the following NEC® sections provides the requirement for the concept that the requirements for grounding in Chapter 5 through Chapter 7 can modify or supplement the rules in Chapter 1 through Chapter 4?
A. 517.17 B. 250.118 C. 250.3 D. 90.3
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Explain why triple evacuations are not normally performed on large systems.
What will be an ideal response?
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