当混凝土拌合物坍落度达不到要求时如何进行调整？_爱下问搜题

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问题问答题简答题

当混凝土拌合物坍落度达不到要求时如何进行调整？

答案

参考答案：

当混凝土拌合物坍落度偏小时，在水灰比不变的前提下，适当增加水泥浆的数量，以增加骨料之间水泥浆层厚度，使骨料间的润滑作用加大，从而提高混凝土拌合物的流动性；

当混凝土拌合物坍落度偏大时，在砂率不变的前提下，适当增加骨料的数量，以减少骨料之间水泥浆层厚度，使骨料间的润滑作用降低，从而减小混凝土拌合物的流动性。

问答题

什么是“真实票据理论”

完形填空

“Imagine you are walking along the road. Suddenly you fall over and all the passers-by burst into laughter. You feel very　 1　 and think the world is laughing at you . But in fact, five minutes later, they have　 2　 it ever happened.” The other day when I came across these words in an article, I didn’t agree with the　 3　 .
The author thinks the best thing to do in this kind of　 4 is to pretend nothing has happened, and so avoid　 5　 trouble.
I admit that we should keep　 6　 because “Your tears will only remind others of what happened, while your　 7　 can let them forget it.” But this is far from satisfactory. We should do　8　 to make things better.
I used to be a(n) 9　 girl and not very good at maths. Our new maths teacher asked me a question and I still remember how I hung my head in 10 when I couldn’t answer it.
“If you don’t know the answer, just tell me.” the teacher said, “If you don’t how can I know 　 11　 you know the answer or not?” All of my classmates burst into laughter. My face turned red but the teacher　 12　 me to go to the blackboard and　 13　 what I knew. If I had　 14　 the words in the article, I would have given up. But I tried my best. And to everyone’s 15　, I succeeded! The teacher smiled and said, “Well done! I　 16　 you could do it!”
Since then, I have become active in maths as　 17　 as in other subjects. I used to think doing maths exercises was a waste of time. But now, I know　 18　 I do can make things better. Everyone is the　 19　 of his own fate.
If we make mistakes, we should take on an active　20　 . Laugh, and the world laughs with you; weep(哭泣), and you weep alone.

D．embarrassed

A．environment

B．surrounding

D．satisfaction

C．think about

A．expectation

B．disappointment