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【单选题】
某组分在固定相中的质量为m A (g),在流动相中的质量为m B (g),而该组分在固定相中的浓度为c A (g/mL),在流动相中的浓度为c B (g/m),则此组分的分配系数是( )。A.
m A /m B
B.
m B /m A
C.
m A /m A +m B
D.
c A /c B
E.
c B /c A
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A.
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B.
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A.
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B.
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C.
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【单选题】患者，男性41岁。浅昏迷2日，为患者行留置导尿最主要的目的是
A.
保持床单位清洁干燥
B.
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C.
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D.
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E.
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A.
High employment and economic growth
B.
Interest rate stability and financial market stability
C.
High employment and price level stability
D.
Exchange rate stability and financial market stability
E.
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