Which statement is correct?
A、Themomentaofasystemofparticlesmustbelargerthanthemomentumofoneparticleinthesystem.;
B、Themomentumofeachparticleinasystemisequaltozero,thenthemomentaofthewholesystemmustbeequaltozero.;
C、Themomentumofeachparticleinasystemisnotequaltozero,thenthemomentaofthewholesystemmustnotbeequaltozero.;
D、Themagnitudeofthemomentumofaparticlesystemmustbeequaltothesummationofthemagnitudesofthemomentaofallparticlesinthesystem.
发布时间：2026-02-20 03:16:28
