发电机转子上装设阻尼绕组的目的是什么?

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问题:

发电机转子上装设阻尼绕组的目的是什么?

考点:发电厂集控运行技术考试发电厂集控运行技术考试题库
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下列句子句意明确、没有语病的一句是()。

A.法国国家健康研究所以及法国变态反应学联合会日前的一份调查显示,用美沙醪和盐酸叮丙诺啡等毒品替代物进行的戒毒治疗可以取得很好效果

B.近期,北京、河南等地幼儿园连续发生两起重大意外伤害事故,幼儿伤亡惨重,广泛引起社会各界的关注

C.在减少婴儿死亡率和提高孕妇健康方面,东南亚、北非和加勒比地区取得进步,但西亚和非洲撒哈拉以南地区几乎有了进展

D.驻伊拉克美军作战部队官兵阵亡数达到999人,其中当日一天就有7名美军在巴格达及其附近地区与当地的人武装冲突中被打死

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阅读下面两首诗,然后回答问题。

寄弟

明·徐熥

春风送客翻愁客,客路逢春不当春。

寄语莺声休便老,天涯犹有未归人。

送杨曰补南还

清·沈钦圻

去年春尽同为客,此日君归又暮春。

最是客中偏送远,况堪更送故乡人。

(1)一般的送别诗,多从被送之人着笔,写送者与被送者的感情。而这两首诗却别具一格,试作分析。

答:_________________________________________________________

(2)这两诗在揭示主题的手法上有所不同,请分别结合诗的后两句作简要分析。

答:_________________________________________________________

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ABC Bhd published its annual report for 2008 in April 2009. The report included the audited accounts for the year ended 31 December 2008, which indicated that the company had made substantial profi ts for 2008 and that the company was fi nancially sound. The auditors’ report which accompanied the accounts stated that the auditors were of the opinion that the company had observed accounting standards and that the auditors were satisfi ed that the accounts represented a true and fair view of the fi nancial position of the company as a whole.Relying on this report, Ali, a member of the public, purchased 100,000 shares of ABC Bhd, on the Stock Exchange.It has now been discovered that ABC Bhd was in fact insolvent at the time of the audit. This has resulted in the shares of the company becoming almost worthless. Ali considers that the auditors had not carried out their audit properly. He wishes to sue the auditors in the tort of negligence.Required:Advise Ali:

(a) on the matters he should prove in order to found an action in the tort of negligence, and (6 marks)

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在下列4个核反应方程中,x表示质子的是(  )

A.+x

B.+x

C.++x

D.++x

题型:问答题 简答题

足月新生儿生理性黄疽血胆红素最高不超过( )

A.85.5umol/L

B.171umol/L

C.205.2umol/L

D.256.5umol/L

E.307.8umol/L

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