Which of the following is NOT one of the four words used in reference to your speaking voice?

MSDS sheets contain information on __________

A) shipping and required labeling B) chemical purity C) certificate of analysis D) none of the above

What is the inspiratory time for a frequency of 30 breaths/min and an inspiratory time-to-expiratory time ratio of 1:3?

a. 0.13 second c. 0.75 second b. 0.50 second d. 2.00 seconds