中国大学MOOC: Who discovered X-rays?
举一反三
- Who discovered X-rays?? Par. 1|Par. 4|Par. 3|Par. 2
- 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
- 以下属于直接电离辐射的是（） A: X-rays B: γ-rays C: β-rays D: neutrons
- Who discovered the X ray ( ).
- X-rays and gamma rays can be used to detect and treat cancer ______.