题目内容:
X射线的穿透能力,与下列哪项无关()X-rays' penetration ability is independent of which of the following()
A.物质的原子序数Atomic number of the material
B.物质的厚度Thickness of the material
C.射线的宽窄Width of X-ray beam
D.射线的能量Energy of X-rays
参考答案:
X射线的穿透能力,与下列哪项无关()X-rays' penetration ability is independent of which of the following()
A.物质的原子序数Atomic number of the material
B.物质的厚度Thickness of the material
C.射线的宽窄Width of X-ray beam
D.射线的能量Energy of X-rays