题目内容

[音频]

A. Workers who have to work during holidays.
B. Employees who intend to earn extra money.
C. Big companies that usually close on during holidays.
D. Small businesses that try to be morecompetitive.

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两个8欧的电阻串联,其等效电阻等于()欧?

A. 8
B. 16
C. 4
D. 64

两个8欧的电阻并联,其等效电阻等于()欧?

A. 8
B. 16
C. 4
D. 64

常见的电路等效变换有哪些?

A. 多个电阻串联
B. 多个电阻并联
C. 多个电阻混联
D. 理想电压源和理想电流源

以下关于电阻并联的特点正确的是

A. 并联电阻的端电压相等
B. 总电流等于各支路电流之和
C. 等效电阻的倒数等于各并联电阻倒数之和
D. 电阻并联等效电阻等于各电阻之和

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