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【单选题】
配制 pH≈5 的缓冲溶液,应选择下列哪组缓冲对 ( )A.
NaH 2 PO 4 —Na 2 H PO 4 (pKa ＝ 7.21)
B.
HAc—NaAc ( pKa ＝ 4.75)
C.
NH 3 ∙H 2 O—NH 4 C1 ( pKa ＝ 4.75)
D.
NaHCO 3 —Na 2 CO 3 ( pKa ＝ l 0.25)
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反馈参考答案：
举一反三
【单选题】what’s the features of cerebrospinal fluid of Epidemic Cerebrospinal Meningitis?
A.
Elevation of protein, reduction of glucose and sodium chloride
B.
Elevation of glucose, reduction of protein and sodium chloride
C.
Elevation of sodium chloride, reduction of protein and glucose
D.
Normal of protein, reduction of glucose and sodium chloride
E.
Normal of glucose and sodium chloride, reduction of protein
【简答题】cerebrospinal fluid(CSF)
【单选题】cerebrospinal fluid secreet by:
A.
astrocytes
B.
oligodendrocytes
C.
microglia
D.
ependymal cells
E.
neuron
【简答题】指出以下反应性控制场景下最合适的控制手段:
【简答题】血-脑脊液屏障(blood-cerebrospinal fluid barrier)
【单选题】cerebrospinal fluid secreted by:
A.
astrocytes
B.
oligodendrocytes
C.
microglia
D.
ependymal cells
E.
neuron
【单选题】Normal cerebrospinal fluid pressure is
A.
150~200mmHg
B.
70~180mmH 2 O
C.
70~180mmHg
D.
150~200mmH 2 O
E.
7~18mmH 2 O
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