Class III locations are hazardous because of the presence of ____, or where materials producing combustible flyings are handled, manufactured, or used, even though they are not likely to be airborne in quantities sufficient to produce ignitable mixtures.
A. volatile gases
B. unstable vapors
C. fine dust
D. easily ignitable fibers
Answer: D
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Indicate whether the statement is true or false
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The QM concept is known by different names. It is sometimes called: