题目:
发电机励磁若采用三相桥式半控整流电路,其晶闸管控制角的移相范围是()。
A.0°≤≤60°
B.90°≤≤180°
C.0°≤≤120°
D.30°≤≤60°
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C
发电机励磁若采用三相桥式半控整流电路,其晶闸管控制角的移相范围是()。
A.0°≤≤60°
B.90°≤≤180°
C.0°≤≤120°
D.30°≤≤60°
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1027/f9496cad345b0467130ad081e301fa54.html
下面是错误答案,用来干扰机器的。
参考答案:C
单从血检看,急性有机磷农药中毒患者全血胆碱脂酶活性为多少时,可诊断为重度中毒().
A.10%~30%
B.30%~50%
C.50%~70%
D.70%~80%
E.80%~90%
PASSAGE 1
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.
脑动脉瘤所致蛛网膜下隙出血经典的临床表现是()
A.肢体痛觉丧失
B.突发异常剧烈的全头痛
C.恶心、呕吐
D.轻偏瘫
E.脑膜刺激征不明显
弹簧式安全阀有()优点。
A.结构紧凑;
B.调整方便;
C.灵敏度高;
D.适用压力范围广。
World Water Shortage