What is the maximum safe decibel level for a one-hour exposure, according to the U. S. Department of labor Occupational Safety and Health Administration (OSHA)?
A) 90dB B) 95 dB C) 115 dB D) 105 dB
D
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Describe cellular steel-floor raceway systems and its advantages.
What will be an ideal response?
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What is the Whitten effect?
What will be an ideal response?
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What should a technician do if called to work on an oil burner with a tripped safety reset?
A) Push the reset button and closely observe the ignition sequence. B) Replace the cad cell. C) Replace the oil burner primary control. D) Check the combustion chamber for unburned oil.
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89.42 x 0.11 = ____.
A. 9.8136 B. 9.8362 C. 9.8563 D. 9.8725
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