Which type of radiation do we use for bone metastatic tumor treatment（ ）
A: Beta particle
B: alfa particle
C: Gama particle
D: A and B
A: Beta particle
B: alfa particle
C: Gama particle
D: A and B
举一反三
- The black hole is ( ), and no particle or electromagnetic radiation can escape from it.
- A _______ is the locus of points traversed by a given particle as it travels in a field of flow; it provides us with a “ history ” of the particle’s locations. A: system B: streamline C: pathline D: particle
- Suppose a particle moves in a circle. Which statement is correct?
- 要实现渐变贴图应选择（ ）。 A: Gradient B: Raytrace C: Particle Age D: Particle Mblure
- 1. A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? A: It exerts a force on the particle parallel to the field. B: It exerts a force on the particle along the direction of its motion. C: It increases the kinetic energy of the particle. D: It exerts a force that is perpendicular to the direction of motion.