What element is used to produce the electricity in fuel cells?
A. oxygen
B. hydrogen
C. carbon
D. nitrogen
Answer: B
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All welds start with a(n) ____.
A. low temperature B. low voltage C. arc strike D. fuel set at five psig
Groundwater:
A) is found mostly in shallow layers just below the argillic. B) moves laterally but not vertically below the soil profile. C) is a source of water above the vadose zone in a soil. D) is a major source of water for irrigation in the United States. E) moves downward in the vadose zone through the capillary fringe.
In a Toyota power-split system, when the planetary ring gear is not moving ________
A) The vehicle is in reverse B) There is a fault C) The vehicle is not moving D) None of these
A 3rd order high-pass filter has a rolloff rate of
A) -30 dB per decade B) -60 dB per decade C) -20 dB per decade D) -20 dB per octave