下列有关窦性P波的描述不正确的是() ["大部分导联P波为钝圆形,可有轻度切迹","在Ⅱ导联上,P波方向向下","正常人P波时限小于0.11s","心率在正常范围时,成人P-R间期为0.12~0.20s","正常人P波,在肢体导联上,电压<0.25mV"]
心理健康的标准界定主要采用的方法是() ["问卷调查","定性观察","访谈调查","行为观察","自我评定"]
健康心理学主要解决的心理问题是人类() ["疾病的治疗","疾病的康复","健康的维护","行为的改变","技能的提高"]
创新扩散理论认为新观念、新事物传播最有效的途径是() ["组织传播与人际传播结合","大众传播与人际传播结合","大众传播与群体传播结合","正式传播与人际传播结合","群体传播与大众传播结合"]
下列符合室性早搏心电图表现的是() ["P’波提前出现","P波宽大","QRS波群0.10s","提前出现的QRS波群之前无提前出现的P’波","提前出现的QRS波群之前有逆行P’波"]
21-三体综合征特殊面容有哪些?