로그인
Physics for IGCSE & O level - Rays And Waves (Section 6 - No. 7)
Which part of a simple telephone system converts sound into electrical signals?
Earphone
Microphone
Decoder
Transmission path
설명
The microphone converts sound into electrical signals.
댓글 (0)
댓글을 달려면 로그인하세요
광고
자바스크립트가 이 페이지를 올바르게 로드하도록 허용
