External cooling of the skin during treatment of amphetamine toxicity aids in the reduction of _________________

In health, approximately what proportion of the total work of breathing is attributable to friction-al resistance to tissue movement?

a. 20% b. 30% c. 40% d. 50%

All the following statements are true EXCEPT:

a. Disposable items can be disinfected and reused. b. Disposable items are ideal for infection control. c. Disposable items may be more expensive overall for the dentist. d. Disposable items are intended for single use only.