Which
one is not correct about ventilation/ perfusion ratio? ()
A: the
normal value is 0.84 in resting state
B: its
decreasing means the increasing of physiologic dead space
C: its
value reaches to 3 at apex of lung
D: its
value decreases at inferior part of lung because there is not
sufficient gas exchange there
E: when
it undergoes embolism in pulmonary artery, its value decreases
one is not correct about ventilation/ perfusion ratio? ()
A: the
normal value is 0.84 in resting state
B: its
decreasing means the increasing of physiologic dead space
C: its
value reaches to 3 at apex of lung
D: its
value decreases at inferior part of lung because there is not
sufficient gas exchange there
E: when
it undergoes embolism in pulmonary artery, its value decreases
举一反三
- Which of the following about ventilation/perfusion ratio is wrong? A: normal value in quiet state is 0.84 B: decreasing of ventilation/perfusion ratio means that the alveolar ineffective cavity increases C: ratio in pulmonary bottom is the smallest D: in pulmonary embolism, the ratio increases
- The role of money as a store of value refers to: () A: the value of<br/>money falling only when the money supply falls. B: the value of<br/>money falling only when the money supply increases. C: the fact that<br/>money allows worth to be stored readily. D: the fact that<br/>money never loses its value compared with other assets.
- The electric potential inside a charged solid spherical conductor in equilibrium A: is always zero. B: is constant and equal to its value at the surface. C: decreases from its value at the surface to a value of zero at the center. D: increases from its value at the surface to a value at the center that is a multiple of the potential at the surface
- All of the following are<br/>inhalational agents, which agents its MAC value is 1.77? () A: Sevoflurane B: Enflurane C: Halothane D: Isoflurane E: Nitrous oxide
- The<br/>book value of equipment: () A: Increases<br/>with the passage of time. B: Decreases<br/>with the passage of time. C: Remains<br/>the same with the passage of time. D: May<br/>increase or decrease depending upon the economy.