Control bleeding in oral cavity and throat, open approach

When compounding a liquid for otic use, the drug plus any preservatives and other excipients are mixed with about ________ the vehicle, before being brought to full volume

A) two-thirds of B) twice C) half of D) three-quarters of

Which type of fire can burn at such a high temperature that common extinguishing agents may be rendered ineffective?

A. Class B B. Class C C. Class D D. Class K