A ____ is used to provide support for floor joists and the subfloor when they intersect the concrete.

A. rafter
B. bridge
C. span
D. ledger


Answer: D

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In the diagram, if AD = 12 in, DE = 13 in, AE = 14 in, BC = 22 in, determine the length of AC.    Round the answer to the nearest tenth.

? Fill in the blank(s) with the appropriate word(s).

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The demarcation point is defined by:

A) the telephone company B) the business customer C) it depends on the size of the business customer D) none of the above

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Batteries can be an explosion hazard because _____.