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【单选题】
变压器的其他条件不变,若一、二次侧的匝数同时减少10%,则绕组漏抗X1、X2,励磁电抗Xm的大小将( )
A.
X1、X2同时减小10%,Xm增大
B.
X1、X2同时减少到0.81倍,Xm减小
C.
X1、X2同时减少到0.81倍,Xm增大
D.
X1、X2同时减小10%,Xm减小
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参考答案:
举一反三
【单选题】专门负责整台电子计算机的指挥与控制的是()。
A.
输入设备
B.
输出设备
C.
存储器
D.
控制器
【简答题】On Nov.18th, 1908, three men went up in a balloon. They started early in London. The headman was Auguste Gaudron, and the other two men were Tannar and Maitland. They had a big balloon and they were r...
【简答题】阅读理解。 On Nov.18th, 1908, three men went up in a balloon (气球). They started early in London. The headman was Augusta Gaudron, and the other two men were Tannar and Maitland. They had a big balloon and ...
【简答题】The rates went up this ()
【简答题】阅读理解. On Nov. 18th, 1908, three men went up in a balloon(气球). They started early in London. The headman was Auguste Gaudron, and the other two men were Tannar and Maitland. They had a big balloon and ...
【判断题】典型序列出现的概率一定大于非典型序列。
A.
正确
B.
错误
【判断题】The rates went up this month
A.
正确
B.
错误
【简答题】The retail sector was __________ hard when interest rates went up again this month.
【简答题】阅读理解。 On Nov.18th,1908,three men went up in a balloon (气球).They started early in London. The headman was Auguste Gaudron,and the other two men were Tannar and Maitland. They had a big balloon and they...
【判断题】差别税收理论认为,一般来说,股利收入的所得税率高于资本利得所得税率,因此,资本利得对于股东更为有利。 ( )
A.
正确
B.
错误
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