[单选题]下列符合心电图诊断窦性停搏的是（）

A、A.心室率小于40次／分
B、B.可见单个逸搏或逸搏心律
C、C.长PP间期的时间>1.5秒
D、D.长PP间期与基本的窦性PP间期无倍数关系
E、E.PP间期进行性缩短，直到出现一次长PP间期

参考答案： D

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