In a PEM fuel cell, which side does the oxygen enter from?

A. Gate
B. Anode
C. Drain
D. Cathode


Answer: D

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Hamsters are classified as

A. Herbivorous B. Omnivorous C. Carnivorous D. Granivorous E. None of the above

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Members of this (these) microbial group(s) are responsible for a major proportion of the nitrogen fixed globally in symbiosis with higher plants

A) actinomycetes B) bacteria C) fungi D) A and B E) all of the above

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What is the ISO wiring color code for continuous power?

A. white B. black C. red D. green

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Classify the following transfer functions of filters as lowpass, bandpass, highpass or bandstop according and to these definitions:

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