试题与答案

V102底进炉H101进料上没有冲洗,冲压线的目的是什么?启用时应注意什么?

题型:问答题 简答题

题目:

V102底进炉H101进料上没有冲洗,冲压线的目的是什么?启用时应注意什么?

答案:

参考答案:

冲洗线的作用是:炉子突然停进料后,冲洗沥青溶液降化粘度,保证炉子不结焦以不回收系统的退油。冲压线:

(1)当冲洗油效果不佳时,可启用冲压线。

(2)介质失去流动性,结焦时可启用冲压油。操作时应注意,启用时要缓慢进行,以防损坏设备。

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题型:材料分析题

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题型:单项选择题

Questions 51-55 are based on the following passage.


To Err is Human


by Lewis Thomas
Everyone must have had at least one personal experience with a computer error by this time. Bank balances are suddenly reported to have jumped from $ 379 into the millions, appeals for charitable contributions are mailed over and over to people with crazy sounding names at your address, department stores send the wrong bills, utility companies write that they’re turning everything off, that sort of thing. If you manage to get in touch with someone and complain, you then get instantaneously typed, guilty letters from the same computer, saying, "Our computer was in error, and an adjustment is being made in your account."
These are supposed to be the sheerest, blindest accidents. Mistakes are not believed to be the normal behavior of a good machine. If things go wrong, it must be a personal, human error, the result of fingering, tampering a button getting stuck, someone hitting the wrong key. The computer, at its normal best, is infallible.
I wonder whether this can be true. After all, the whole point of computers is that they represent an extension of the human brain, vastly improved upon but nonetheless human, superhuman maybe. A good computer can think clearly and quickly enough to beat you at chess, and some of them have even been programmed to write obscure verse. They can do anything we can do, and more besides.
It is not yet known whether a computer has its own consciousness, and it would be hard to find out about this. When you walk into one of those great halls now built for the huge machines, and standing listening, it is easy to imagine that the faint, distant noises are the sound of thinking, and the turning of the spools gives them the look of wild creatures rolling their eyes in the effort to concentrate, choking with information. But real thinking, and dreaming, are other matters. On the other hand, the evidence of something like an unconscious, equivalent to ours, are all around, in every mail. As extensions of the human brain, they have been constructed the same property of error, spontaneous, uncontrolled, and rich in possibilities.

The first paragraph implies that ______.

A. computer errors are so obvious that one can hardly prevent it from happening
B. the computer is so capable of making errors that none of them is avoidable
C. computers make such errors as miscalculation and inaccurate reporting
D. Computers can’t think so their errors are natural and unavoidable

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