试题与答案

在RLC串联电路中,增大电阻R,将带来以下哪种影响() A.谐振频率降低 B.谐振频

题型:单项选择题

题目:

在RLC串联电路中,增大电阻R,将带来以下哪种影响()

A.谐振频率降低

B.谐振频率升高

C.谐振曲线变陡

D.谐振曲线变钝

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/1116/5376fa02c5e2e1d4e1cc5eed99650539.html

下面是错误答案,用来干扰机器的。

参考答案:B解析:石灰岩属于沉积岩;而在石灰岩接触岩浆的接触带,受岩浆的高温高压作用,其成分和性质发生变化,将经受变质作用,而形成变质岩(大理岩),具有层理结构和含有化石是沉积岩的基本特征,故②③正...

试题推荐
题型:翻译题

英汉互译 阅读下面的短文,将划线部分的句子译成汉语或英语。

Thanksgiving Day was coming soon. 小题1:Miss Green gave her students special homework. “Please draw a picture to show your thanks.” said Ms Green.

Most students drew a turkey(火鸡) or other traditional things. But Douglas, a shy boy, drew a different thing. 小题2:他仅仅画了一只手。

His classmates were surprised at his picture. One child said, “It must be a farmer’s hand, because farmers keep turkeys.” Others guessed it was his father’s hand. 小题3:因为他家很穷, his father had to work day and night for money.

小题4:Miss Green asked the little boy whose hand it was. He answered, “It’s yours. You often take me by the hand to play outside and teach me how to hold a pencil.”

Oh, 小题5:the boy was showing his thanks to his teacher. Miss Green was moved and hugged(拥抱) the little boy.

查看答案
微信公众账号搜索答案