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【单选题】
具有临界胶团浓度是
A.
溶液的特性
B.
胶体溶液的特性
C.
表面活性剂的一个特性
D.
高分子溶液的特性
E.
亲水胶的特性
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A.
surf
B.
surfed
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are surfing
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surfing
【判断题】精馏塔的全塔总效率不等于塔内各板的默弗里效率的平均值。
A.
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A.
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A.
The West.
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【单选题】In the 1960s the West Coast became an important center for rock music. Los Angeles and Southern California are famous for sunshine and surfing. There, a quieter kind of rock called surf rock became fa...
A.
The West.
B.
New York.
C.
The South.
D.
San Francisco.
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