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Gaokao Biology Practice Question

若给人静脉注射一定量的 $0.9 \% \mathrm{NaCl}$ 溶液, 则一段时间内会发生的生 理现象是

  1. A.机体血浆渗透压降低, 排出相应量的水后恢复到注射前水平
  2. B.机体血浆量增加, 排出相应量的水后渗透压恢复到注射前水平
  3. C.机体血浆量增加, 排出相应量的 $\mathrm{NaCl}$ 和水后恢复到注射前水平
  4. D.机体血浆渗透压上升, 排出相应量的 $\mathrm{NaCl}$ 后恢复到注射前水平

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