心电图纸移动速度为500mm/s、定准电压为1mV相当于5mm时,横距、纵距1mm各代表
A.0.02s,0.2mV B.0.04s,0.1mV C.0.05mV,0.02s D.0.08s,0.2mV E.0.1mV,0.04s
◎欢迎参与讨论,请在这里发表您的看法、交流您的观点。