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()


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

正确答案:射线的宽窄Width of X-ray beam