首页/ 题库 / [单选题]正弦交流电的波形图描绘的是电流的大小和方的答案

正弦交流电的波形图描绘的是电流的大小和方向随()变化的曲线。

单选题
2021-12-30 23:13
A、电压
B、电动势
C、频率
D、时间
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正确答案
D

试题解析

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