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【单选题】
如果泥浆的Pf=Mf，泥浆碱度是由（）提供的。
A.
OH-；
B.
OH-和CO32-；
C.
32-；
D.
CO32-和HCO-。
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Passage Two Questions 62 to 56 are based on the following passage. Jan. 6 issue--The weather outside was icy, but inside, 250 journalists were gathered in a Manhattan office complex to s...
A.
boasted
B.
combined
C.
spared
D.
spoiled