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【单选题】

絮凝剂的用量大小是很重要的,当用量()时,悬浮物不能失水脱稳,絮凝效果不好。

A.
过大
B.
不足
C.
合适
题目标签:絮凝剂悬浮絮凝
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参考答案:
参考解析:
.
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【单选题】Passage Two Questions 66 to 70 are based on the following passage: If an agreement signed in Germany works out, travelers of this Asian city may one day be able to move from the downtown area to its n...

A.
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B.
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C.
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D.
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