供给X线管的能量,有百分之多少转换成X线A.小于1%B.4%C.10%D.85%E.99%

作者: rantiku 人气: - 评论: 0
问题 供给X线管的能量,有百分之多少转换成X线
选项 A.小于1% B.4% C.10% D.85% E.99%
答案 A
解析 :电子束撞击靶面时绝大部分能量(>99%)转变成热。

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