The architect's _______ is often used to help the freehand drfter keep the different components in proporation.
A. scale
B. ruler
C. triangle
Answer: A
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What is the maximum distance between pitot tube measuring points in rectangular ducts?
a. 6 inches b. 10 inches c. 12 inches d. 24 inches
__________ is the process of varying fluid flow by changing the settings on fluid flow controls such as valves, dampers, and blowers.
A. Adjusting B. Balancing C. Documenting D. Testing
Technician A says that if a bolt has a grade of 4.6 marked on its head, it is a metric bolt. Technician B says that grade-8 bolts can be replaced with grade-5 bolts if needed. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
What two fasteners are used with sheet metal square and rectangular duct?
A. "S" fasteners (clips) and drive clips (cleats) B. staples and tape C. self-tapping screws and draw bands D. tabs and adhesives