Steel reinforcing bars, called ____, are used to reinforce masonry walls.
A. wire
B. rebar
C. mesh
D. blocks
Answer: B
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? Identify and state the historical significance of William H. Seward.
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Which of the following parts is LEAST-Likely to be included in the valve train?
A. Camshaft B. Piston C. Rocker arms D. Pushrods
Wireless transmission systems do not have a physical connection between the sending and receiving systems
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. Although water may appear perfectly clear and free of bubbles, it can still contain a significant quantity of air in solution. 2. Combined air and dirt separators, or a hydraulic separator with the same capabilities, are never desirable in situations where an older distribution system containing steel or iron piping or radiators will be interfaced to a new boiler. 3. Properly designed and installed hydronic systems will always require constant manual air venting. 4. Low system pressurization is usually caused by not setting the make-up water system properly. 5. Glycol-based antifreezes tend to leave a slippery film on components and tools that eventually turn sticky.