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【单选题】
水灰比是指水泥浆中水与水泥的（）
A.
密度之比
B.
质量之比
C.
体积之比
D.
细度之比
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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
相关题目：
【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
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