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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/mL) ,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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举一反三
【单选题】Which of the foll o wing is true according to the Seabed Authority from paragraph 8?
A.
It can provide clues to il l egal fishing activity .
B.
It requires foreign vessels to submit to inspections at any port of call and requires port states to share information on any suspected wrongdoing they find.
C.
It brings the ocean into bet t er view than ever before.
D.
It was established to control all mineral-related activities in the international seabed area.