Which of the following describes why fuel cell technology is not in mass production?
A) Insufficient power density
B) High cost
C) Lack of durability
D) All of these are reasons vehicles with fuel cells are not currently mass-produced.
D
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Most current hybrid automobiles use NiMH batteries.
Answer the following statement true (T) or false (F)
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Choose two diff erent pre-Industrial Revolution technologies and describe the burdens on society that resulted from them.
What will be an ideal response?
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Which of the following is a basic component of a series linear regulator?
A) control element B) error detector and sample circuit C) reference element D) all of the above
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Select a material that is combined with polymers to form very strong manufacturing composites.
A. cotton B. metal C. graphite D. all of the above
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