In ____ welding, fusion is obtained by directing a highly concentrated beam of coherent light to a very small spot.

A. laser beam
B. ultrasonic
C. resistance
D. inertia


Answer: A

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Because of the massive weight of concrete being placed all at once for one-way solid slabs, the shoring system must be _____.

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__________________ is a form of insurance that guarantees the bid price that was provided to the owner by the bidding contractor

A. bid bond B. bid insurance C. performance bond D. payment bond

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The APWA color code used to mark underground gas lines is _____

a. red b. blue c. green d. yellow

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Two center lines are uslly drawn at

A. 45 degrees B. 90 degrees C. 30 degrees D. 180 degrees

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