R-P＇间期>70毫秒，且RP＇/P＇R ["房性心动过速","快慢型房室结折返性心动过速","慢旁路型房室折返性心动过速","慢快型房室结折返性心动过速","快旁路型房室折返性心动过速"] R-P＇间期 ["A.房性心动过速","B.快慢型房室结折返性心动过速","C.慢旁路型房室折返性心动过速","D.慢快型房室结折返性心动过速","E.快旁路型房室折返性心动过速"] 未见P波，R-R间期绝对不规整，QRS波形态正常，多见于（） ["A.窦性心动过速","B.阵发性室上性心动过速","C.阵发性室性心动过速","D.心房颤动","E.心室颤动"] 窦性期前收缩有（） ["A.提早出现的房性P波","B.提早出现的正常QRS波","C.提早出现的窦性P波","D.提早出现的室性QRS波","E.长间歇后出现的室性QRS波"] 室性逸搏有（） ["提早出现的房性P波","提早出现的正常QRS波","提早出现的窦性P波","提早出现的室性QRS波","长间歇后出现的室性QRS波"] 正常心电轴为（）