Engineering, 21.03.2021 03:40, aileenf598

Exam Lesson Name: The Trades of Plumbing and Pipefitting Exam number: 286115RR
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7. Which one of the following was once considered state-of-the art and is still used for control systems and instrumentation in buildings?
A. Steam
B. Brine
C. Compressed air
D. Deionized water

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Exam Lesson Name: The Trades of Plumbing and Pipefitting Exam number: 286115RR
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