The main purpose of SCRs and NSCRs is to _____.

a. turn nitrogen compounds into nitrogen and water
b. burn off coal dust in flue gas
c. scrub out sulfur compounds from flue gas
d. absorb mercury from the flue gas


a. turn nitrogen compounds into nitrogen and water

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Purchasing models and systems are the primary means of controlling raw materials

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Indicate whether the statement is true or false.

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List the requirements and safety practices that must be followed during a commercial diving operation

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There are __________ resistive pressure elements in the bridge circuit of a semiconductor strain gauge.

A. 1 B. 2 C. 3 D. 4

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