额定电压为10000/400V的三相电力变压器负载运行时,若副边电压为410V,负载

题型:单项选择题

问题:

额定电压为10000/400V的三相电力变压器负载运行时,若副边电压为410V,负载的性质是()。

A、电阻

B、电阻电感

C、电阻电容

D、电感

考点:注册电气工程师电气传动电气传动题库
题型:单项选择题

中日甲午战争是中国历史上的重大事件。从反侵略角度看这场战争的特点不包括 [ ]

A.政府消极抗战和爱国官兵积极抗战相交错

B.陆战和海战相结合,决定性战役多为海战

C.官兵积极抗战和近代人民第一次自发的大规模抵抗相交错

D.清政府战败赔款割地和中国人民继续抗日同时并存

题型:单项选择题

患者,女性,18岁,反复发作右侧肢体麻木、无力伴右额颞部搏动样疼痛。右侧肢体无力在头痛消失后约1小时即可完全缓解。头颅MRI检查无异常。家庭中有类似患者。

若患者的一级或二级亲属中无类似患者,则应诊断为()。

A.偏头痛等位发作

B.常为偏头痛前驱的儿童周期性综合征

C.基底型偏头痛

D.遗传性头痛

E.散发性偏瘫性偏头痛

题型:单项选择题

在彩色显示器中,将红、绿、蓝光束进行混合后得到的颜色称为()色。

A.互补

B.比例

C.相加

D.相减

题型:单项选择题

一般配合力

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 rhetoric the author employed in writing the third paragraph, especially the sentence "A good computer can think clearly and quickly enough to beat you at chess..." is usually referred to in writing as ______.

A. climax
B. personification
C. hyperbole
D. onomatopoeia

更多题库