成年人P－R间期正常值是A、0.11～0.20sB、0.12～0.20sC、0.08～0.20sD、0.10～0.20sE、0.06～0.10s

心率在正常范围内，成年人的P－R间期为（)A、0.12s~0.20sB、0.14s~0.20sC、0.16s~0.20sD、0.18s~0.20s

正常P－R间期A.<0.11sB.0.12～0.20sC.<0.30sD.0.06～0.10sE.<0.04s

正常QRS波宽度A.<0.11sB.0.12～0.20sC.<0.30sD.0.06～0.10sE.<0.04s

Q－T间期的正常值是A.0.32～0.44sB.0.06～0.10sC.0.12～0.20sD.0.04～0.11sE.0.36～0.41s

QRS波群时间的正常值是A.0.32～0.44sB.0.06～0.10sC.0.12～0.20sD.0.04～0.11sE.0.36～0.41s

正常成人心率在正常范围时，P－R间期为A、0.08～0.11sB、0.08～0.20sC、0.12～0.16sD、0.12～0.20sE、0.16～0