X-rays are harmless to the human body
举一反三
- 以下属于直接电离辐射的是（） A: X-rays B: γ-rays C: β-rays D: neutrons
- X-rays and gamma rays can be used to detect and treat cancer ______.
- X-rays are also called Rontgen rays _____ the discoverer who first put them to use. A: in case of B: in view of C: in place of D: in honor of
- 导致X线穿过物质时衰减的原因是The reason for the attenuation of X-rays through the material is? X线能量X-rays' energy|X线频率X-rays' frequency|物质和距离Material and distance|X线波长X-rays' wavelength
- the human body is incredibly