Which of the following devices provides the most protection against a contaminated environment?

Question

asked Oct 7, 2019 177k views

2 Answers

NNsr · Answer 1 · 2019-10-08T18:50:26+0000

A. A full-faced air-purifying respirator

B. A half-face air-purifying respirator

C. A self-contained breathing apparatus

D. A quarter-face filtering dust mask