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当前学科:电工
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示波器中荧光屏的功能是将电子束变换成可见光,示波管荧光屏分有短余辉、中余辉、长余辉、普通示波器常用()。
A . A、短余辉
B . B、中余辉
C . C、长余辉
D . D、余辉
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