A key hole can be used ____.
A. only on wide joints
B. on joints with wide, narrow, or varying root gaps
C. only on narrow joints
D. only on joints with a varying root gap
Answer: B
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____________________ steels are used because of increasing demand for high strength and less weight.
Fill in the blank(s) with the appropriate word(s).
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How does a flowhood measure airflow?
What will be an ideal response?
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a. Working at a bench. b. Walking across carpet. c. Walking across a vinyl floor. d. Picking up a common plastic bag.
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