为缩小放大率，心脏测量时摄影距离应为A．100cmB．150cmC．200cmD．250cmE．300cm

作者: rantiku 人气: - 评论: 0

问题为缩小放大率，心脏测量时摄影距离应为

选项 A．100cm B．150cm C．200cm D．250cm E．300cm

答案 C

解析

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