[单选题]

观察下表,回答问题。
 下列叙述正确的是

A.管电压越高射线的最大波长越长

B.对软组织摄影应用高管电压

C.人体的吸收系数是常数

D.高电压摄影得到低对比照片

E.人体组织的吸收系数随管电压升高而升高

参考答案与解析:

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