Author Question: The most common type of breathing protection used for construction work is a disposable respirator ... (Read 59 times)

TFauchery · **on:** Jul 24, 2018

The most common type of breathing protection used for construction work is a disposable respirator with a NIOSH rating of ________.

A) N-85 B) N-98 C) N-95 D) N-90

Question 2

________ are signs that use symbols and pictures to represent something.

A) MSDS B) Pictograms C) NIOSH posters D) Emergency signals