频谱是描述非正弦周期波特性的一种方式,一定形状的波形与一定结构的频谱相对应。非正弦周

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问题:

频谱是描述非正弦周期波特性的一种方式,一定形状的波形与一定结构的频谱相对应。非正弦周期波的频谱是()频谱。

考点:动力与电气工程电路电路题库
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Mr. Read works in an office. He is very busy and has no time to have a good rest. Every evening, when he comes back from his office, he’s always tired and wants to go to bed early. But his wife often has a lot of interesting things to tell him after supper. She doesn’t stop talking until she 1.________________________, but it’s usually too late and Mr. Read has to get up in time in the morning.

One day the man felt terrible and couldn’t go to work. He decided to 2. ____________________. Mrs. Read went with him. The doctor wrote out a prescription and said to Mrs. Read, “The bottle of medicine is for your husband and the pills are for you.”

“For me?’ the woman said in surprise. “I’m fine. I don’t need any medicine!”

“3. ______________________, madam,” said the doctor. “They are sleeping pills. Your husband will soon be all right if you take them.”

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眩晕日久,精神萎靡,腰膝酸软,少寐健忘,两目干涩,视力减退,或遗精滑泄,耳鸣齿摇,或颧红,五心烦热,舌红,少苔,脉细数。宜选用()

A.六味地黄丸

B.金匮肾气丸

C.右归丸

D.左归丸

E.大补元煎

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如果你干工作干的很顺利,专业也很对口,但是突然领导把你调到信访工作,你怎么办?

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下列不是血脂的是()

A.甘油三酯

B.磷脂

C.胆固醇

D.游离脂肪酸

E.酮体

题型:填空题

机械运行包括试车和()两个阶段。

A.停车

B.起动

C.正常运行

D.修理

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