问题 问答题 案例分析题

篦冷机产生“红河”的原因及操作当中如何调整?

答案

参考答案:

主要原因:①篦冷机冷却效果恶化,高温熟料在篦床上保持较长的时间;②当SM过高,窑内煅烧不好,熟料结粒差,细小的熟料颗粒进入篦床,使篦下压力上升,透过熟料层的冷却空气量减少,熟料冷却效果变差,产生“红河”;③入窑溜子温度波动大导致窑内工况不稳,煅烧时好时坏,也会产生“红河”;④“红河”的产生还和篦冷机的供风形式和篦板形式有关等。

听力题

阅读下面短文,用括号内所给动词的适当形式填空(必要时可加情态动词或助动词)。

Tom worked in the office of Mr Bates.

One day, when Tom got to the office, a letter小题1:_________(wait) for him. He opened it.

“Dear Tom,” the letter said, “I小题2:________(write) to thank you for your help. You小题3:_________(help) me so much when I came to your office. Here’s a ticket for the big football match.”

Tom looked at the ticket. He could not believe that he had it. Everyone looked forward to小题4:__________(watch) the match!

“ I must watch the match,” he though. “ I must. I小题5:_______(expect) the big match for 4 year.”

Tom thought and though. He小题6:________(not put) his heart into any work. Then at twelve o’clock he knew what 小题7:__________(do).

He went out of the office and called his sister, Jean.

At one o’clock Mr Bates came up to him. “I have bad news for you, Tom. Your sister telephoned just now. Your mother小题8:_______(send) to hospital a moment ago.”

“Thank you,” Tom said. “I will go to the hospital. I 小题9:________(come) back as soon as possible.”

In fact, Tom 小题10:_________(leave) the office quickly for the football ground. Tom’s ticket was a good one. He could stand near the front.

The next morning, when Tom got to the office, Mr Bates came up to him. “You’re fired(解雇), Tom.” Then he walked away angrily.

“But why?” Tom asked.

Then a girl said, “We saw the match on TV here yesterday! You were on TV! Tom, you had such a good ticket!”

单项选择题 B型题