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问题 问答题 简答题

负荷曲线有什么用途？

答案

参考答案：

为了保证供电的可靠性及电能质量，尽量减小电网损失，搞好电力系统的调度，必须掌握负荷曲线；

另外日负荷曲线也是发电厂内考虑和安排生产的依据。

单项选择题

（）中出现了“官当”之名。

A.北魏律

B.北齐律

C.曹魏新律

D.南朝陈律
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单项选择题

Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and began to look around.
One of his friends saw him in the street outside his house, and said to him, " Hello, Nasreddin, what are you looking for"
"My ring , "answered Nasreddin. "It fell off my finger. It is a silver(银的)ring with a red stone in it." "Oh, yes. "said the friend. "I remember it. I will help you to look for it. Where did you lose it"
"In my shed."
"But why don’t you look for it there"
"Don’t be foolish! It is quite dark in my shed, how can I find my ring there Here there is light from the lamps in the street.\

Nasreddin’s ring was made of ______.
A. gold B. silver C. stone
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