How is lumber graded?
What will be an ideal response?
Lumber is graded according to its appearance and soundness.
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Tensile strength is determined by ____.
A. dividing the maximum load by the original cross-sectional area of the specimen at the middle B. multiplying the maximum load by the original cross-sectional area of the specimen at the middle C. dividing the original cross-sectional area by the maximum load D. the diameter squared times 0.785
Acetylene is used in tips having ____ preheat holes.
A. one to three B. one to six C. three to five D. three to eight
What does the acronym Btu stand for when referring to heat transfer?
What will be an ideal response?
The length of a standard belt is measured _____
a. on the inside surface b. on the outside surface c. along the pitch line d. on either the inside or outside surface