In addition to a simple gauge glass, boiler water level is also monitored by _____.

a. one other independent system
b. two other independent systems
c. cameras
d. motor-operated valves


b. two other independent systems

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Increasing the supply of water:

a. Is blocked frequently by environmentalists. b. Is blocked frequently by the Endangered Species Act. c. Is an alternative to changing water rights. d. All of the above. e. a and b above.

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A true fat provides a more concentrated amount of energy as compared to carbohydrates,

and also provides some of the essential amino acids. A. True B. False

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What symbol is used to represent efficiency?

A. kWh B. Pi C. Greek letter eta D. Po

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The relay logic and truth table shown in the figure above, represents a(n) _____


a. AND function
b. OR function
c. NOR function
d. NAND function

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