多项选择题
A.≥2.5V B.≥5V C.方波 D.波浪
A.≥60V B.≥20V C.方波 D.波浪
A.串联 B.40W/51Ω C.100uF/50V D.1s
A.串联 B.40W/51Ω C.1000uF D.3-4s
微信扫一扫,加关注免费搜题
