Is it possible for a vegetarian to get enough protein?

When responding to a scene involving a release of acetic anhydride, recommended action by responders should include

a. Responders should wear fully-encapsulated PPE including self-contained breathing apparatus, and use a carbon dioxide or dry chemical extinguisher. b. Responders should use water as a fire extinguishing agent while wearing firefighting turnout gear. c. Responders should wear fully-encapsulated PPE including self-contained breathing apparatus, and use water as a fire extinguishing agent. d. Should not attempt to extinguish fires involving acetic anhrdride.

Why is the total mechanical work of breathing difficult to assess during spontaneous breathing?

a. Most volunteer subjects cannot under-stand the procedure used. b. Respiratory muscle activity contributes to inflation resistance. c. The respiratory muscles (diaphragm, etc.) must be paralyzed. d. The subjects used to make the measure-ments must be unconscious.