The main difference between interstitial fluid and plasma is A: The protein concentration is higher in plasma B: The Na+ concentration is higher in plasma C: The protein concentration is higher in interstitial fluid D: The Na+ concentration is higher in interstitial fluid E: The organic acid concentration is higher in plasma

下列程序的运行结果是（ ）。t = 0 while t < 5: print(t, " is less than 5") t = t + 1else: print(t, " is not less than 5") A: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 55 is not less than 5 B: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 55 is not less than 5 C: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 5 D: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 5

Blood loss from a large (动脉，要道）can lead to death in less than a minute。

Which is suitable for vacuum aspiration？ A: pregnancy of less than 10 weeks B: pregnancy of less than 12 weeks C: pregnancy of less than 14 weeks D: pregnancy of less than 16 weeks E: pregnancy of less than 18 weeks

Where is the highest partial pressure of carbon dioxide in the body A: Venous blood B: capillary blood C: arterial blood D: interstitial fluid E: intracellular fluid