Hearing protection should be worn any time the noise level exceeds _________

A) 70 dB B) 80 dB C) 90 dB D) 60 dB


C

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Problem 1.46 Three steel bolts are to be used to attach the steel plate shown to a wooden beam. Knowing that the plate will support a load P = 28 kips, that the ultimate shearing stress for the steel used is 52 ksi, and that a factor of safety of 3.25 is desired, determine the required diameter of the bolts.

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A trench is an excavation that has a depth greater than its width, and a width that is no greater than _____.

a. 10' b. 15' c. 20' d. 25'

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The ____________________ is the lowest possible melting point of an alloy.

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

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When a filter circuit offers little opposition to a frequency, the frequency is said to be _____.

A. passed B. rejected

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