A fuel cell produces electricity from ________ and ________

A) Nitrogen; hydrogen
B) Hydrogen; oxygen
C) Gasoline; oxygen
D) Water; oxygen


B

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Woodrow Wilson was most comfortable when surrounded by

A. African Americans. B. Catholics. C. political professionals. D. journalists. E. academic scholars.

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Suppose vs(t) = u(t) for t>0. Determine i(t) in the circuit of Fig. 18.40 using Fourier transform.

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Understanding mechanical, electrical and plumbing plans is neccessary for each tradesman.

Answer the following statement true (T) or false (F)

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If a 27 m H inductor has a reactance of 5.5 k?, the frequency equals ________

A) 32.4 kHz B) 324 Hz C) 932 Hz D) 3.24 kHz

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