Hearing protection should be worn when working with many types of compressed-air tools because _____.
a. foreign matter could be blown into the ear canal
b. the loud noise makes it hard to concentrate on your work
c. the very high-pitched sound can cause hearing damage
d. compressor exhausts are extremely loud
c. the very high-pitched sound can cause hearing damage
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The surface of an iron component is to be hardened by carbon. The diffusion coefficient of carbon in iron at 1000°C is given to be 3 × 10?11 m2/s. If the penetration depth of carbon in iron is desired to be 1.0 mm, the hardening process must take at least
(a) 1.10 h (b) 1.47 h (c) 1.86 h (d) 2.50 h (e) 2.95 h
A(n) ____ is a person who establishes a new enterprise or business and assumes financial risks in the hope of gaining wealth.
A. industrial designer B. entrepreneur C. engineer D. white-collar worker
Solve and reduce all answers to lowest terms: 1/4 x (1/2 + 1/8) - 1/16 =
What will be an ideal response?
Not only does a professional driver experience stress on the job, but many drivers sometimes have _____, which often causes the MOST additional stress.
A. career concerns B. difficult family situations C. problems understanding the full nature of their responsibilities D. lack of support or help from friends