Technician A says that hydrogen may be found 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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Approximately how much of an engine's energy is used to drive the vehicle?
A. 25% B. 20% C. 15% D. 10%
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Computer-controlled suspension systems reduce body sway during fast acceleration.
Answer the following statement true (T) or false (F)
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A square wave is a unique form of the rectangular pulse wave in that:
A) the positive and negative halves are equal. B) the duty cycle is 50%. C) the wave is symmetrical. D) all of these
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What type of load tends to push material together?
A. compression B. tensile C. shear D. stress
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