三相对称负载作△形联结,若每相负载的阻抗为38Ω,接在线电压为380V的三相交流电路

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问题:

三相对称负载作△形联结,若每相负载的阻抗为38Ω,接在线电压为380V的三相交流电路中,则电路的线电流为()A。

考点:电气保运考试电气保运高级工电气保运高级工题库
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Today I’d like to talk about how to become a (1) . Usually you have to start at the beginning. That is, you have to begin (2) of some sort on a local newspaper, a (3) , maybe on a small magazine -- work (4) . Now there aren’t that many organizations which have large numbers of foreign correspondents so you also have to (5) with that aim (6) . Another way of doing it is to work abroad, and work as (7) . That’s somebody who sells stories, and gets paid (8) , to newspapers and magazines and so on. And hoping to (9) that way, and eventually to be offered a (10) .
I don’t really know (11) are needed, but obviously a degree in modern languages or (12) would be very useful. But, a degree in itself probably wouldn’t (13) . It wouldn’t be enough to get you job. It wouldn’t (14) to make an editor decide to (15) . So it’s difficult to define the (16) . You’re going to need (17) and the ability to assimilate information (18) and then produce stories which (19) of the newspaper or radio or television station you (20) .

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男孩,4岁,消瘦,"X"形腿,肋骨呈串珠状,"鸡胸",头颅略方,体重偏低,X线检查提示:骨质疏松,掌、腕骨愈合缓慢。

可初步诊断为 ()

A.佝偻病

B.脚气病

C.缺铁症

D.缺锰症

E.缺锌症

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我国社会保障基金投资范围包括银行存款、国债、证券投资基金、股票、企业债、金融债等有价证券。( )

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下面()是换热容器。

A.蒸发器

B.分离器

C.蒸炒锅

D.电热蒸汽发生器

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汽轮机抽汽系统的作用是什么?

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