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CT值主要与下述那一项有关（）CT value is mainly related to which of the following（）
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CT值主要与下述那一项有关（）CT value is mainly related to which of the following（）
A.原子序数Atomic number
B.氢浓度Hydrogen concentration
C.物质密度Material density
D.物质对X线的线性衰减系数Linear attenuation coefficient of substance to X-ray
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