X-rays can ______ many objects.
举一反三
- X-rays and gamma rays can be used to detect and treat cancer ______.
- 以下属于直接电离辐射的是（） A: X-rays B: γ-rays C: β-rays D: neutrons
- Value is the main reason that we see objects and understand objects.
- 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
- Something that is weighs less than many other similar objects.