What are the two most important features of a fuel cell?
What will be an ideal response?
The two most important features of a fuel cell are the electrolytes used within the cell and the temperatures the cells operate at.
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How do ultraviolet and infrared radiation differ? Do you think your body emits any radiation in the ultraviolet range? Explain.
What will be an ideal response?
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Very small pupils are a symptom of _____.
a. heat stroke b. frostbite c. hypothermia d. heat exhaustion
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The point at which the filament __________ in the viewfinder of an optical pyrometer is when its temperature is equal to the target.
A. appears B. disappears
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In most residential electric water heaters, the high-temperature cutoff and ____ are combined into one device.
Fill in the blank(s) with the appropriate word(s).
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