单项选择题
A.Ⅰ、Ⅱ、Ⅲ B.V1-V6 C.AvR、AvL、AvF D.Ⅰ、Ⅱ、Ⅲ、AvR、AvL、AvF
A.V3R-V5R B.V1-V6 C.V3R-V5R、V7-V9 D.V7-V9
A.CK B.AST C.LDH D.Myo E.cTnI