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【简答题】
在混凝土拌和物中掺入减水剂后，会产生下列各效果：当原配合比不变时，可以增加拌和物的______；在保持混凝土强度和坍落度不变的情况下，可以减少______及节约______；在保持流动性和水泥用量不变的情况下，可以降低______，提高______。
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【单选题】听力原文：M: I'd like to examine your eyes and we'll start with the chart. Would you sit here and look at the chart? Can you see any letters? W: Not really. The letters run together. They seem blurred. Q: ...
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【单选题】—Hello! This is Henry speaking. I'd like to speak to your father. —Sorry, he has _____ Shanghai. [     ]
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interesting anywhere
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【单选题】听力原文：M: Would you like anything else? W: Well, I'd like to see your pie menu. That's the main reason why I like to dine here. Q: Where does the conversation take place? (3)
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相关题目：
【简答题】I'd like to borrow your cell phone to call my friend in London.
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【单选题】-Hello! This is Henry Speaking. I'd like to speak to your father. -Sorry, he has Shanghai. [     ]
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been to
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At a hotel.
B.
At an office.
C.
At home.
D.
At a restaurant.
查看完整题目与答案