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【单选题】
关于CT密度分辨率测试的叙述，正确的是（）A.
使用高分辨率测试板测试
B.
可使用模卡测试
C.
以能分辨出对比度差为0.3%时的物体直径值（mm）表示
D.
是与伪影有一种参数测试
E.
以能分辨出LP/cm表示
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