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【单选题】
电力系统运行稳定性主要是指下列哪个元件的运行稳定性( )A.
电动机；
B.
变压器；
C.
输电线路；
D.
发电机。
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反馈参考答案：
举一反三
【单选题】对下图所示零件的尺寸标注,哪种说法是正确的?
A.
螺纹M6必须标注在粗实线圆上
B.
直径5.3的孔标注正确
C.
直径为10的孔上必须用小写字母“h”
D.
孔10H7的标注是正确的
【简答题】如下图所示零件视图,不正确表达局部视图的是()A. B. C.
【单选题】______was regarded as America s poet laureate and invited to read his poem at the inauguration of President kennedy.
A.
T. S. Eliot
B.
E. E. Cummings
C.
Robert Frost
D.
Ezra Pound
【单选题】Thomas Jefferson was inaugurated (举行就职典礼) on March 4, 1801. He was the first President to take the oath of office (宣誓就职) in the nation's permanent capital, Washington, D.C. Although Washington was a n...
A.
The Presidential Palace was not located there.
B.
It contained many old buildings in 1801.
C.
It was not the first capital of the United States.
D.
Thomas Jefferson was a newcomer there in 1801.
【单选题】Recognize the Figures of Speech in the Following Sentences and Appreciate how they are used. 1 ) Let both sides explore what problems unite us instead of belaboring those problems which divide us. ( J...
A.
contrast
B.
couplet
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