Technician A says that hydrogen is the fuel source for a fuel cell. Technician B says that hydrogen is an energy carrier for a fuel cell. Which technician is correct?

A) Technician A B) Technician B
C) Both Technicians D) Neither Technician


B

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Histograms or frequency plots are best described as:

a. a graphical tool used to understand variability. b. constructed with a block of data separated into five to twelve bars or sections from low number to high number. c. will resemble a bell if the data is in control d. all the above

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What gauges are used for measuring duct pressure?

A) Vacuum gauges B) High-pressure gauges C) Magnehelic gauges D) Compound gauges

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Why do drafters prepare a sketch before starting a formal drawing?

What will be an ideal response?

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For an English micrometer reading of 0.894 inches, how many numbered divisions show up on the barrel?

A. 8 B. 9 C. 10 D. 11

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