Just before an infant is delivered, the fetal scalp can be seen at the vaginal opening during each contraction. This is referred to as:

At 20° C, water vapor pressure is measured as 15 mm Hg. If the maximum partial pressure at this temperature is 17.5 mm Hg, the relative humidity is:

a. 30%. c. 75%. b. 50%. d. 85%.

The expected respiratory quotient of a patient with severe sepsis is:

a. 0.7. c. 1.0. b. 0.8. d. >1.0.