中国大学MOOC: What are the four characteristics of X-rays?
举一反三
- What are the four characteristics of X-rays? A: Par. 1 B: Par. 2 C: Par. 3 D: Par. 4 E: Par. 5
- What are the four characteristics of X-rays? A: Par. 1 B: Par. 2 C: Par. 3 D: Par. 4 E: Par. 5
- What are the four characteristics of X-rays? A: Par. 1 B: Par. 2 C: Par. 3 D: Par. 4 E: Par. 5
- 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 ______.