Which kind of cooling tower draws or pushes the air across the water, rather than up through it?
A) crossflow B) counterflow C) forced-draft D) induced-draft
A
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How is optoisolation achieved?
What will be an ideal response?
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Lightning conductors should provide at least ____ paths for current flow from an air terminal to Earth.
A. two B. three C. four D. five
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A room 13.75 feet wide and 28.5 feet long is carpeted. The cost is $31.10 per square yard, and the installation cost is $167.00. What is the total cost to carpet the room? Round the answer to 2 decimal places.
Fill in the blank(s) with the appropriate word(s).
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A check valve arranged and trimmed for installation in a drain line that is used to control backflow is a
A. needle valve B. gate valve C. backwater valve D. diaphragm valve
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