同步发电机的励磁系统通常包括哪两部分?

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问题:

同步发电机的励磁系统通常包括哪两部分?

考点:电力系统自动装置电力系统自动装置题库
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2006年2月9日,中国人民银行发布了《关于开展人民币利率互换交易试点有关事宜的通知》,通知发布当天( )和中国光大银行完成首笔交易。

A.中国银行

B.国家开发银行

C.华夏银行

D.中国工商银行

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从3-磷酸甘油开始合成磷脂酰丝氨酸及磷脂酰乙醇胺,下列描述正确的是

A.是两条不同的合成途径

B.都需要消耗ATP、CTP

C.甘油三酯为其共同中间产物

D.都需要脂酰辅酶A

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I don't know when _____ famous?[ ]

A. does he become      

B. he becomes      

C. did he become

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下列除去杂质的方法中,正确的是

选项物质(括号内为杂质)去除杂质的方法
ANaCl(Na2CO3加入适量的Ca(OH)2溶液、过滤
BCaO(CaCO3加入水、过滤
CCu(Fe)加入过量CuSO4溶液、过滤
DHNO3(H2SO4加入适量BaCl2溶液、过滤

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While much of the United States of America put Prohibition to rest 73 years ago, large parts of the South have remained strictly off-limits to alcohol sales.
But local and national business interests that stand to profit from the sale of alcohol, including real estate developers, grocery chains, restaurant groups and Wal-Mart, are combining their political and financial muscle to try to persuade hundreds of dry towns and counties to go wet. In the process, they are changing the face of the once staunchly prohibitionist Bible Belt.
Attempts by Wal-Mart and others to allow alcohol sales in other places that remain dry—415 counties in the South and in Kansas still prohibit such sales—are meeting fierce resistance from some church groups and religious leaders. They argue that returning to the days when liquor flowed will mean more family violence, underage drinking, drunken driving and a general moral decay in the community.
Wal-Mart, based in a dry county in Arkansas, forbids drinking at events held at corporate headquarters. But the giant retailer has made a push in the last year to sell more liquor, along with beer and wine, in its stores.

The word "They" underlined in Paragraph 3 refers to ______ .

A.415 counties in the South

B.alcohol saies in other places

C.attempts by Wal-Mart and others

D.church groups and religious leaders

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