A. $\left\{ \matrix{{v}_{13}{=}{30}{k}{m}{/}{h}\hfill \cr{v}_{23}{=}{50}{k}{m}{/}{h}\hfill \cr} \right.$
B. $\left\{ \matrix{{v}_{13}{=}{20}{k}{m}{/}{h}\hfill \cr{v}_{23}{=}{20}{k}{m}{/}{h}\hfill \cr} \right.$
C. $\left\{ \matrix{{v}_{13}{=}{25}{k}{m}{/}{h}\hfill \cr{v}_{23}{=}{36}{k}{m}{/}{h}\hfill \cr} \right.$
D. $\left\{ \matrix{{v}_{13}{=}{50}{k}{m}{/}{h}\hfill \cr{v}_{23}{=}{30}{k}{m}{/}{h}\hfill \cr} \right.$
D
Câu hỏi trên thuộc đề trắc nghiệm dưới đây !
Copyright © 2021 HOCTAP247